year month AMT (°C) 1881 1 -4.2 1881 2 -2.1 1881 3 2.5 1881 4 8.2 1881 5 16.7 1881 6 18.4 1881 7 23.2 1881 8 23 1881 9 22.9 1881 10 14.3 1881 11 6.8 1881 12 3.9 1882 1 -2.2 1882 2 1.3 1882 3 4.3 1882 4 8.6 1882 5 13.4 1882 6 21.9 1882 7 24.2 1882 8 22.8 1882 9 19.4 1882 10 13.8 1882 11 3.6 1882 12 -0.8 1883 1 -4.4 1883 2 -1.2 1883 3 0.1 1883 4 8.5 1883 5 16.1 1883 6 23.1 1883 7 23.5 1883 8 20.9 1883 9 16.5 1883 10 10.9 1883 11 6.2 1883 12 -0.2 1884 1 -4.3 1884 2 0.9 1884 3 2.6 1884 4 8.9 1884 5 15.7 1884 6 21.4 1884 7 22.3 1884 8 23.1 1884 9 22.1 1884 10 14.1 1884 11 6.4 1884 12 0.9 1885 1 -1.8 1885 2 -5.4 1885 3 -1.3 1885 4 9.3 1885 5 15.1 1885 6 20.8 1885 7 25.6 1885 8 22.1 1885 9 17.7 1885 10 11.9 1885 11 6.6 1885 12 1.8 1886 1 -3.5 1886 2 -2.2 1886 3 3.1 1886 4 11.9 1886 5 15.8 1886 6 20.3 1886 7 24.1 1886 8 21.1 1886 9 18.7 1886 10 12.7 1886 11 6.6 1886 12 -1.3 1887 1 -2.2 1887 2 -0.2 1887 3 -0.2 1887 4 7.9 1887 5 18.1 1887 6 21.2 1887 7 26.2 1887 8 21.2 1887 9 16.5 1887 10 11.2 1887 11 4.8 1887 12 0.7 1888 1 -5 1888 2 -1.7 1888 3 -1.4 1888 4 7.7 1888 5 14.6 1888 6 21.9 1888 7 21.7 1888 8 22.6 1888 9 17.2 1888 10 9 1888 11 7 1888 12 1.5 1889 1 1.9 1889 2 -2.3 1889 3 4.2 1889 4 10.5 1889 5 17.7 1889 6 21.5 1889 7 23.3 1889 8 21.6 1889 9 18.5 1889 10 9.7 1889 11 6.7 1889 12 4.2 1890 1 2.9 1890 2 3.1 1890 3 1.8 1890 4 9.8 1890 5 16.1 1890 6 21.5 1890 7 23 1890 8 22.7 1890 9 19.7 1890 10 12.6 1890 11 6.4 1890 12 -1.2 1891 1 0.9 1891 2 2.3 1891 3 2.2 1891 4 10 1891 5 14.7 1891 6 22.2 1891 7 22.8 1891 8 24.4 1891 9 22.2 1891 10 12.6 1891 11 6.3 1891 12 5.8 1892 1 -0.3 1892 2 0.7 1892 3 1.6 1892 4 9.3 1892 5 15.4 1892 6 23.4 1892 7 24.3 1892 8 23.7 1892 9 18.2 1892 10 11.7 1892 11 5.9 1892 12 0.1 1893 1 -4.8 1893 2 -1.5 1893 3 1.7 1893 4 8.3 1893 5 14.6 1893 6 20.4 1893 7 23.4 1893 8 23.3 1893 9 17.4 1893 10 13.3 1893 11 5.7 1893 12 1.6 1894 1 0.8 1894 2 -2.2 1894 3 5.8 1894 4 9.6 1894 5 16.3 1894 6 21.6 1894 7 24.2 1894 8 21.6 1894 9 20.6 1894 10 12.9 1894 11 4.8 1894 12 2.6 1895 1 -1.4 1895 2 -4.4 1895 3 1.8 1895 4 10 1895 5 17.6 1895 6 23.2 1895 7 22.9 1895 8 24.4 1895 9 22 1895 10 11.1 1895 11 8.6 1895 12 3.5 1896 1 -1.3 1896 2 -0.9 1896 3 0.2 1896 4 11.5 1896 5 19.6 1896 6 21.3 1896 7 25.1 1896 8 24.7 1896 9 19.6 1896 10 11.9 1896 11 9.6 1896 12 1.3 1897 1 -0.8 1897 2 0.6 1897 3 4.7 1897 4 10.3 1897 5 16.4 1897 6 19.7 1897 7 24.9 1897 8 22.9 1897 9 19.4 1897 10 13.6 1897 11 7.3 1897 12 3.7 1898 1 1.7 1898 2 2.2 1898 3 7.7 1898 4 8.8 1898 5 15.1 1898 6 22.1 1898 7 24.9 1898 8 24.3 1898 9 21.6 1898 10 15.2 1898 11 7.3 1898 12 1.6 1899 1 -0.5 1899 2 -2.3 1899 3 3.2 1899 4 9.8 1899 5 17.2 1899 6 23.7 1899 7 25.1 1899 8 24.3 1899 9 18.9 1899 10 14.8 1899 11 7.7 1899 12 3.3 1900 1 0.3 1900 2 -1 1900 3 0.6 1900 4 10.2 1900 5 15.3 1900 6 21.8 1900 7 25.4 1900 8 25 1900 9 21.6 1900 10 16.2 1900 11 9.2 1900 12 1.3 1901 1 0.1 1901 2 -3.2 1901 3 3.3 1901 4 9.1 1901 5 14.4 1901 6 21.7 1901 7 25.8 1901 8 24.1 1901 9 20.2 1901 10 13.3 1901 11 3.9 1901 12 2.1 1902 1 -1 1902 2 -1.4 1902 3 6.4 1902 4 10.4 1902 5 15.2 1902 6 19.6 1902 7 22.9 1902 8 22.3 1902 9 19.1 1902 10 14.2 1902 11 10.5 1902 12 0.1 1903 1 -1 1903 2 0.7 1903 3 8.8 1903 4 11.4 1903 5 17.6 1903 6 17.9 1903 7 23.9 1903 8 20.7 1903 9 19.5 1903 10 14.4 1903 11 5.5 1903 12 -0.3 1904 1 -3.9 1904 2 -4.1 1904 3 2.1 1904 4 8.2 1904 5 17.9 1904 6 21.6 1904 7 24.1 1904 8 22.7 1904 9 19.6 1904 10 12.1 1904 11 5.4 1904 12 -1.1 1905 1 -1.7 1905 2 -4.2 1905 3 4.5 1905 4 10.1 1905 5 16.4 1905 6 21.2 1905 7 25.4 1905 8 23.7 1905 9 20.9 1905 10 15.1 1905 11 6.3 1905 12 3.8 1906 1 3.4 1906 2 0.1 1906 3 1.6 1906 4 11.2 1906 5 17.3 1906 6 23.4 1906 7 25.6 1906 8 25.1 1906 9 21.4 1906 10 14 1906 11 7.4 1906 12 1.1 1907 1 1.4 1907 2 -3.6 1907 3 5.7 1907 4 8.3 1907 5 13.6 1907 6 20.5 1907 7 25.3 1907 8 23.2 1907 9 20.9 1907 10 11.3 1907 11 7.5 1907 12 3.7 1908 1 0.3 1908 2 -2.7 1908 3 4.8 1908 4 11.3 1908 5 17.8 1908 6 22.8 1908 7 26.7 1908 8 24.2 1908 9 20.4 1908 10 15.8 1908 11 7.7 1908 12 2.9 1909 1 1.2 1909 2 3.1 1909 3 3.3 1909 4 9.2 1909 5 16.3 1909 6 22.4 1909 7 23.3 1909 8 22.4 1909 9 19.6 1909 10 12.6 1909 11 9.6 1909 12 0.2 1910 1 -0.4 1910 2 -1.4 1910 3 6.2 1910 4 13 1910 5 16.6 1910 6 20.5 1910 7 25.3 1910 8 22.3 1910 9 20.9 1910 10 15.1 1910 11 5.6 1910 12 -1.3 1911 1 2.2 1911 2 -0.6 1911 3 1.3 1911 4 8.8 1911 5 18.1 1911 6 21.2 1911 7 25.4 1911 8 22.8 1911 9 19.8 1911 10 13.2 1911 11 5.4 1911 12 4.2 1912 1 -4.8 1912 2 -1.9 1912 3 2.9 1912 4 10.2 1912 5 16.8 1912 6 20.9 1912 7 24.3 1912 8 21.9 1912 9 19.2 1912 10 14.9 1912 11 8.4 1912 12 4 1913 1 4.8 1913 2 -0.6 1913 3 6.9 1913 4 11.3 1913 5 15.9 1913 6 21.4 1913 7 24.5 1913 8 22.9 1913 9 18.1 1913 10 14.6 1913 11 8.2 1913 12 3.7 1914 1 -0.4 1914 2 -3.8 1914 3 2.3 1914 4 8.8 1914 5 18.1 1914 6 20.5 1914 7 22.3 1914 8 23.6 1914 9 19.3 1914 10 15.1 1914 11 6.6 1914 12 -0.3 1915 1 1.2 1915 2 2 1915 3 2.4 1915 4 12.4 1915 5 15 1915 6 20 1915 7 23.3 1915 8 22 1915 9 21.1 1915 10 14.1 1915 11 7.6 1915 12 0.8 1916 1 2.1 1916 2 -2.4 1916 3 0 1916 4 9.1 1916 5 16.3 1916 6 18.7 1916 7 24.1 1916 8 23.7 1916 9 19.6 1916 10 14.1 1916 11 7.2 1916 12 1.1 1917 1 0.3 1917 2 -2.2 1917 3 3.8 1917 4 9.1 1917 5 12.4 1917 6 21.3 1917 7 24.4 1917 8 24.4 1917 9 17.5 1917 10 11.5 1917 11 5 1917 12 -3.9 1918 1 -5.9 1918 2 -1.1 1918 3 5.4 1918 4 10.3 1918 5 18.5 1918 6 19.9 1918 7 23.7 1918 8 24.6 1918 9 17.7 1918 10 14.8 1918 11 7.8 1918 12 4.1 1919 1 1.8 1919 2 1.4 1919 3 6.1 1919 4 9.9 1919 5 16.7 1919 6 21.6 1919 7 23.9 1919 8 21.6 1919 9 19.7 1919 10 14.9 1919 11 7 1919 12 -1.1 1920 1 -4.7 1920 2 -1.9 1920 3 4.4 1920 4 8.9 1920 5 14.9 1920 6 20.7 1920 7 23.2 1920 8 23.5 1920 9 20.3 1920 10 16.2 1920 11 6.9 1920 12 2.9 1921 1 0.8 1921 2 1.1 1921 3 9.1 1921 4 13.4 1921 5 16.2 1921 6 21.8 1921 7 25.2 1921 8 22 1921 9 22.3 1921 10 13.5 1921 11 7.1 1921 12 0.2 1922 1 -2.1 1922 2 0.9 1922 3 5 1922 4 10.8 1922 5 18.1 1922 6 22.1 1922 7 23.2 1922 8 22.4 1922 9 20.1 1922 10 14.6 1922 11 7.6 1922 12 0.9 1923 1 -1.1 1923 2 -3.2 1923 3 2.7 1923 4 10.2 1923 5 15.6 1923 6 23 1923 7 23.2 1923 8 22.6 1923 9 20.2 1923 10 13.3 1923 11 7.3 1923 12 5.6 1924 1 0.4 1924 2 -1.7 1924 3 4 1924 4 9.5 1924 5 14.1 1924 6 19.9 1924 7 23.4 1924 8 23.5 1924 9 17.8 1924 10 13.9 1924 11 6.9 1924 12 1.1 1925 1 -2 1925 2 3.3 1925 3 6.8 1925 4 11 1925 5 15.3 1925 6 23.5 1925 7 23.1 1925 8 22.9 1925 9 20.4 1925 10 10.3 1925 11 6.6 1925 12 1.6 1926 1 0 1926 2 -1.6 1926 3 2.1 1926 4 8.5 1926 5 15.6 1926 6 19.3 1926 7 23.9 1926 8 23.3 1926 9 18.7 1926 10 12.8 1926 11 7.2 1926 12 -1.7 1927 1 -0.6 1927 2 2.4 1927 3 6.1 1927 4 9.2 1927 5 15 1927 6 19.6 1927 7 23.3 1927 8 20.3 1927 9 19.9 1927 10 15.3 1927 11 9.6 1927 12 2.6 1928 1 1.1 1928 2 0.6 1928 3 3.8 1928 4 9.1 1928 5 15.2 1928 6 19.7 1928 7 24.4 1928 8 24.1 1928 9 18.2 1928 10 14.9 1928 11 8.6 1928 12 4.1 1929 1 -0.1 1929 2 0.5 1929 3 7.3 1929 4 10.6 1929 5 16.5 1929 6 21.9 1929 7 24.4 1929 8 22.8 1929 9 20.8 1929 10 12.6 1929 11 7.9 1929 12 2.1 1930 1 0.7 1930 2 2.8 1930 3 4.6 1930 4 9.1 1930 5 17.6 1930 6 23.1 1930 7 24.7 1930 8 23.1 1930 9 22.2 1930 10 13.1 1930 11 7.5 1930 12 1.4 1931 1 0.4 1931 2 1.1 1931 3 4.6 1931 4 10.6 1931 5 16.4 1931 6 21.5 1931 7 25.3 1931 8 24 1931 9 22.4 1931 10 16.3 1931 11 11.1 1931 12 5 1932 1 6.2 1932 2 2.3 1932 3 2.9 1932 4 9.4 1932 5 16.7 1932 6 21.4 1932 7 24.5 1932 8 24.8 1932 9 20.8 1932 10 14.7 1932 11 6.7 1932 12 3.7 1933 1 4.6 1933 2 1.2 1933 3 3.6 1933 4 10.2 1933 5 18 1933 6 22.4 1933 7 24.3 1933 8 23.8 1933 9 20.9 1933 10 13.4 1933 11 5.4 1933 12 0.4 1934 1 1.5 1934 2 -6.7 1934 3 2.9 1934 4 10.2 1934 5 17.6 1934 6 23.2 1934 7 25.4 1934 8 22.2 1934 9 20.7 1934 10 12.5 1934 11 9.4 1934 12 0.8 1935 1 -1.7 1935 2 -0.4 1935 3 6.3 1935 4 9.9 1935 5 15.5 1935 6 21.2 1935 7 25.1 1935 8 23.7 1935 9 18.5 1935 10 14.2 1935 11 9.2 1935 12 -1.1 1936 1 -1.5 1936 2 -3.5 1936 3 7.3 1936 4 8.8 1936 5 18 1936 6 21 1936 7 24.6 1936 8 24.1 1936 9 20.1 1936 10 14.2 1936 11 5.9 1936 12 3.7 1937 1 4.6 1937 2 1.6 1937 3 2.5 1937 4 9.8 1937 5 17.9 1937 6 22.1 1937 7 24.8 1937 8 24.8 1937 9 18.9 1937 10 13 1937 11 8 1937 12 1.9 1938 1 0.1 1938 2 1.9 1938 3 6.8 1938 4 12.1 1938 5 16 1938 6 21.3 1938 7 24.8 1938 8 25.7 1938 9 18.9 1938 10 15.4 1938 11 9.1 1938 12 2.8 1939 1 0.1 1939 2 2.8 1939 3 4 1939 4 9.1 1939 5 18.3 1939 6 22.8 1939 7 24.8 1939 8 25.6 1939 9 20.3 1939 10 14.1 1939 11 6.5 1939 12 2.7 1940 1 -3.9 1940 2 0.5 1940 3 1.7 1940 4 8.2 1940 5 15.9 1940 6 21.3 1940 7 24.6 1940 8 21.9 1940 9 19.2 1940 10 12.1 1940 11 7.4 1940 12 3.6 1941 1 -1.4 1941 2 -0.5 1941 3 2.2 1941 4 13.8 1941 5 18.2 1941 6 22.2 1941 7 24.3 1941 8 23.3 1941 9 21.1 1941 10 15.9 1941 11 10 1941 12 3.5 1942 1 -0.7 1942 2 -1.3 1942 3 6.1 1942 4 12.2 1942 5 18.5 1942 6 21.7 1942 7 24.6 1942 8 23.1 1942 9 20.2 1942 10 14.9 1942 11 8.3 1942 12 -0.5 1943 1 -0.7 1943 2 1.4 1943 3 4.6 1943 4 7.8 1943 5 17 1943 6 24.6 1943 7 24.9 1943 8 24.4 1943 9 19.7 1943 10 13.2 1943 11 7.4 1943 12 0.6 1944 1 1.1 1944 2 0.7 1944 3 3.1 1944 4 9.4 1944 5 19.4 1944 6 22.4 1944 7 26.3 1944 8 25.4 1944 9 21.2 1944 10 13.9 1944 11 7.8 1944 12 0.2 1945 1 -3.8 1945 2 1.1 1945 3 10.6 1945 4 13.1 1945 5 15.1 1945 6 21.6 1945 7 23.7 1945 8 23 1945 9 21.3 1945 10 13.4 1945 11 8.7 1945 12 -0.6 1946 1 1.2 1946 2 -0.2 1946 3 9.9 1946 4 10.2 1946 5 16.6 1946 6 20.9 1946 7 24.1 1946 8 21.6 1946 9 21 1946 10 16.5 1946 11 10.3 1946 12 3.2 1947 1 2.9 1947 2 -1.5 1947 3 3.2 1947 4 10.3 1947 5 15.5 1947 6 20.2 1947 7 24.2 1947 8 24.4 1947 9 20.3 1947 10 17.6 1947 11 6.8 1947 12 1.1 1948 1 -3.7 1948 2 -0.7 1948 3 5.6 1948 4 10.6 1948 5 15.7 1948 6 20.8 1948 7 25.1 1948 8 23.8 1948 9 21.3 1948 10 13.7 1948 11 11.3 1948 12 3.5 1949 1 3.7 1949 2 3.7 1949 3 6.1 1949 4 12.1 1949 5 17.3 1949 6 23.5 1949 7 26.4 1949 8 24.8 1949 9 19 1949 10 17.3 1949 11 7.9 1949 12 4.1 1950 1 5.2 1950 2 -0.2 1950 3 2.4 1950 4 9.2 1950 5 14.9 1950 6 21.3 1950 7 23.9 1950 8 22.8 1950 9 18.1 1950 10 15.6 1950 11 9.1 1950 12 1.7 1951 1 3.3 1951 2 2.3 1951 3 5.3 1951 4 11.7 1951 5 17.4 1951 6 21 1951 7 24.9 1951 8 23.7 1951 9 20.1 1951 10 14.8 1951 11 6.4 1951 12 3.2 1952 1 2.3 1952 2 2.3 1952 3 4.6 1952 4 12.8 1952 5 15.8 1952 6 23.1 1952 7 26.8 1952 8 23.7 1952 9 21.1 1952 10 13.2 1952 11 9.2 1952 12 3.6 1953 1 3.1 1953 2 3.6 1953 3 6.3 1953 4 11.3 1953 5 17.4 1953 6 23.1 1953 7 25.4 1953 8 24.3 1953 9 21.3 1953 10 15.9 1953 11 9.8 1953 12 5.2 1954 1 -0.7 1954 2 4.5 1954 3 5.3 1954 4 12.1 1954 5 15.4 1954 6 22 1954 7 24.8 1954 8 22.6 1954 9 19.7 1954 10 16.5 1954 11 8 1954 12 2.2 1955 1 -0.6 1955 2 1.7 1955 3 5.4 1955 4 11.9 1955 5 18.6 1955 6 20.5 1955 7 27.2 1955 8 25.6 1955 9 19.9 1955 10 15.4 1955 11 6.8 1955 12 -1.3 1956 1 0 1956 2 2.6 1956 3 3 1956 4 9 1956 5 14.8 1956 6 21.9 1956 7 22.7 1956 8 23.4 1956 9 18.2 1956 10 14.5 1956 11 8.2 1956 12 4.9 1957 1 -1.9 1957 2 2.9 1957 3 5.5 1957 4 11.8 1957 5 17.3 1957 6 23.5 1957 7 25.4 1957 8 23.1 1957 9 20.9 1957 10 13.4 1957 11 9.7 1957 12 4.6 1958 1 -0.1 1958 2 -2.6 1958 3 4.6 1958 4 11.6 1958 5 15.1 1958 6 19.6 1958 7 24.5 1958 8 24 1958 9 19.8 1958 10 13.1 1958 11 8.8 1958 12 -1.4 1959 1 -0.5 1959 2 0.1 1959 3 4.5 1959 4 12.1 1959 5 19.1 1959 6 21.8 1959 7 24.6 1959 8 25.3 1959 9 22.4 1959 10 15.4 1959 11 7.7 1959 12 3.6 1960 1 1.1 1960 2 2.4 1960 3 0.7 1960 4 12.3 1960 5 17 1960 6 22.1 1960 7 23.7 1960 8 23.8 1960 9 20 1960 10 14.5 1960 11 9.8 1960 12 -0.6 1961 1 -2.4 1961 2 2.6 1961 3 5.3 1961 4 9.4 1961 5 15.5 1961 6 22.4 1961 7 25.6 1961 8 24.7 1961 9 23.1 1961 10 16.2 1961 11 9.3 1961 12 1.9 1962 1 0.3 1962 2 -0.1 1962 3 6.2 1962 4 11.8 1962 5 18 1962 6 22.5 1962 7 23.3 1962 8 22.4 1962 9 18.3 1962 10 14.1 1962 11 6.2 1962 12 -0.3 1963 1 -1.1 1963 2 -2.1 1963 3 6.5 1963 4 12.1 1963 5 16.2 1963 6 21.6 1963 7 24.7 1963 8 22.3 1963 9 17.3 1963 10 16.6 1963 11 10.2 1963 12 -0.4 1964 1 2.1 1964 2 0.5 1964 3 6.2 1964 4 9.8 1964 5 18.6 1964 6 22 1964 7 24.1 1964 8 22.7 1964 9 19.6 1964 10 12.8 1964 11 9.7 1964 12 2.4 1965 1 -1.3 1965 2 1.1 1965 3 4.4 1965 4 10.3 1965 5 19.1 1965 6 21.2 1965 7 23.5 1965 8 22.9 1965 9 19.7 1965 10 14.1 1965 11 8.2 1965 12 4.7 1966 1 0.1 1966 2 1.7 1966 3 5.9 1966 4 9.8 1966 5 16.4 1966 6 24.1 1966 7 26.5 1966 8 24.9 1966 9 19.2 1966 10 13.4 1966 11 9.4 1966 12 2.1 1967 1 3 1967 2 -1.6 1967 3 3.1 1967 4 9.8 1967 5 12.9 1967 6 22.7 1967 7 24.1 1967 8 23.3 1967 9 19.3 1967 10 14 1967 11 5.8 1967 12 3.4 1968 1 -2.9 1968 2 -1.7 1968 3 6.3 1968 4 12.8 1968 5 15.3 1968 6 20.9 1968 7 25.2 1968 8 24.4 1968 9 21.4 1968 10 15.8 1968 11 8.3 1968 12 1.3 1969 1 -0.1 1969 2 0.3 1969 3 4.5 1969 4 13.3 1969 5 18.5 1969 6 22.8 1969 7 23.8 1969 8 25.2 1969 9 20.6 1969 10 14.3 1969 11 8 1969 12 0.8 1970 1 -3.8 1970 2 0.6 1970 3 3.7 1970 4 11.2 1970 5 17.8 1970 6 21.6 1970 7 25.1 1970 8 25.3 1970 9 21.6 1970 10 14.9 1970 11 9.2 1970 12 1.3 1971 1 -2.8 1971 2 1.7 1971 3 4.5 1971 4 10.4 1971 5 16.3 1971 6 23.4 1971 7 25.4 1971 8 24.4 1971 9 22 1971 10 17.1 1971 11 7.3 1971 12 4.9 1972 1 1.7 1972 2 -0.3 1972 3 4.3 1972 4 10.1 1972 5 17.4 1972 6 19.9 1972 7 25.1 1972 8 24.2 1972 9 20.8 1972 10 11.9 1972 11 6.9 1972 12 3.6 1973 1 1.9 1973 2 0.3 1973 3 8 1973 4 11.9 1973 5 15.3 1973 6 23 1973 7 25.2 1973 8 25.3 1973 9 20.8 1973 10 15.7 1973 11 9.1 1973 12 3.9 1974 1 1.8 1974 2 -0.2 1974 3 5.6 1974 4 12.9 1974 5 16.1 1974 6 20.6 1974 7 25.1 1974 8 24.7 1974 9 19.3 1974 10 12.3 1974 11 9 1974 12 4.1 1975 1 2.9 1975 2 2.1 1975 3 4.6 1975 4 8.8 1975 5 18.8 1975 6 21.4 1975 7 24.3 1975 8 23.6 1975 9 17.9 1975 10 15.1 1975 11 11.3 1975 12 2.2 1976 1 -2.6 1976 2 4.4 1976 3 6.9 1976 4 12.8 1976 5 15.7 1976 6 22.9 1976 7 23.8 1976 8 23.5 1976 9 19.2 1976 10 11.6 1976 11 5.4 1976 12 -1.2 1977 1 -5.5 1977 2 0.8 1977 3 8.2 1977 4 12.1 1977 5 18.3 1977 6 21.2 1977 7 26.1 1977 8 24.3 1977 9 20.1 1977 10 12.7 1977 11 8.5 1977 12 2.1 1978 1 -2.2 1978 2 -2.7 1978 3 3.9 1978 4 10.9 1978 5 16.4 1978 6 21.8 1978 7 23.6 1978 8 24.4 1978 9 18.3 1978 10 12.7 1978 11 8.8 1978 12 3.8 1979 1 0.9 1979 2 -3.6 1979 3 8.3 1979 4 11.4 1979 5 18.5 1979 6 20.7 1979 7 24.9 1979 8 24.9 1979 9 21.4 1979 10 14.1 1979 11 11.4 1979 12 5.1 1980 1 0.9 1980 2 -0.3 1980 3 5.1 1980 4 12.5 1980 5 18.7 1980 6 21.3 1980 7 26.3 1980 8 26.8 1980 9 21.6 1980 10 12.9 1980 11 7 1980 12 0.3 1981 1 -3.2 1981 2 4.1 1981 3 5.7 1981 4 13.4 1981 5 18.2 1981 6 22.8 1981 7 25.8 1981 8 24.4 1981 9 19.8 1981 10 12.4 1981 11 8.7 1981 12 2.5 1982 1 -3.3 1982 2 1.8 1982 3 5.6 1982 4 10.7 1982 5 17.8 1982 6 20.3 1982 7 25.5 1982 8 22.9 1982 9 20.2 1982 10 14.7 1982 11 10.2 1982 12 6 1983 1 1.4 1983 2 2.4 1983 3 6.7 1983 4 11.3 1983 5 15.7 1983 6 23 1983 7 26.4 1983 8 25.4 1983 9 22.1 1983 10 14.4 1983 11 9.4 1983 12 1.8 1984 1 -1.2 1984 2 4.8 1984 3 2.6 1984 4 11.1 1984 5 16.4 1984 6 23.6 1984 7 23.7 1984 8 24.8 1984 9 18.8 1984 10 16.6 1984 11 8.5 1984 12 6.6 1985 1 -1.8 1985 2 2.6 1985 3 7.7 1985 4 13.1 1985 5 18.5 1985 6 20.3 1985 7 24.6 1985 8 24.1 1985 9 21.4 1985 10 15.3 1985 11 10 1985 12 1.2 1986 1 1.2 1986 2 0 1986 3 7.3 1986 4 12.5 1986 5 18.9 1986 6 22 1986 7 24.4 1986 8 22.8 1986 9 19.9 1986 10 14.4 1986 11 7.6 1986 12 3.9 1987 1 0.2 1987 2 0.7 1987 3 7.3 1987 4 11.9 1987 5 17.6 1987 6 22.7 1987 7 25.6 1987 8 23.4 1987 9 19.8 1987 10 12.1 1987 11 8.7 1987 12 4.2 1988 1 -1.4 1988 2 1.7 1988 3 6.4 1988 4 10.7 1988 5 17.1 1988 6 22.1 1988 7 26.3 1988 8 26 1988 9 19.7 1988 10 11.6 1988 11 9.7 1988 12 2.2 1989 1 3 1989 2 1.4 1989 3 5.8 1989 4 11.2 1989 5 16.7 1989 6 22.2 1989 7 23.9 1989 8 23.3 1989 9 20.1 1989 10 14.6 1989 11 7.6 1989 12 -3.4 1990 1 5.2 1990 2 4.3 1990 3 7.3 1990 4 11.9 1990 5 15.7 1990 6 22.3 1990 7 24.9 1990 8 24.1 1990 9 19.7 1990 10 16.6 1990 11 10.2 1990 12 5.9 1991 1 1.6 1991 2 -2.7 1991 3 7 1991 4 13.2 1991 5 20.4 1991 6 23.4 1991 7 25.4 1991 8 25.1 1991 9 19.7 1991 10 14.7 1991 11 9.1 1991 12 4.2 1992 1 2.1 1992 2 2.4 1992 3 4.4 1992 4 10.3 1992 5 16.1 1992 6 21.3 1992 7 23.4 1992 8 22.8 1992 9 19.6 1992 10 12.5 1992 11 8.1 1992 12 3.3 1993 1 2.4 1993 2 -0.7 1993 3 4.3 1993 4 11.8 1993 5 18.7 1993 6 22.9 1993 7 26.8 1993 8 25.1 1993 9 19.6 1993 10 13.3 1993 11 9.3 1993 12 2.9 1994 1 -3.6 1994 2 -0.8 1994 3 4.8 1994 4 13.1 1994 5 16.6 1994 6 24 1994 7 26.3 1994 8 23.3 1994 9 19.8 1994 10 14.4 1994 11 11.1 1994 12 5.7 1995 1 3.1 1995 2 -0.2 1995 3 7.2 1995 4 11.1 1995 5 16.6 1995 6 22.1 1995 7 26.2 1995 8 25.9 1995 9 20.2 1995 10 16.4 1995 11 6.4 1995 12 0.2 1996 1 -0.8 1996 2 1.1 1996 3 3.8 1996 4 11.2 1996 5 16.2 1996 6 21.9 1996 7 23 1996 8 23.6 1996 9 20 1996 10 13.6 1996 11 6.1 1996 12 5.2 1997 1 0.1 1997 2 4.4 1997 3 5.5 1997 4 10.9 1997 5 15.2 1997 6 21.6 1997 7 24.3 1997 8 22.9 1997 9 19.4 1997 10 13.7 1997 11 6.9 1997 12 3.5 1998 1 4.4 1998 2 4.8 1998 3 7.4 1998 4 12.2 1998 5 17.9 1998 6 20.7 1998 7 24.7 1998 8 24.8 1998 9 21.2 1998 10 14.2 1998 11 8.9 1998 12 6.2 1999 1 1.1 1999 2 3.8 1999 3 5.8 1999 4 11.9 1999 5 17.3 1999 6 22.9 1999 7 27.4 1999 8 24.2 1999 9 20.7 1999 10 13.3 1999 11 10.4 1999 12 4.4 2000 1 -0.4 2000 2 2.9 2000 3 8.4 2000 4 10.6 2000 5 17.5 2000 6 21.8 2000 7 22.4 2000 8 22.5 2000 9 18.9 2000 10 13.9 2000 11 7.4 2000 12 -0.5 2001 1 0.9 2001 2 2.2 2001 3 4.2 2001 4 12.2 2001 5 17.6 2001 6 22.8 2001 7 22.9 2001 8 25.9 2001 9 19.8 2001 10 14.7 2001 11 11.5 2001 12 6.7 2002 1 4.4 2002 2 4.8 2002 3 6.8 2002 4 13.4 2002 5 15.9 2002 6 21.9 2002 7 26 2002 8 25.4 2002 9 21.3 2002 10 12.9 2002 11 7.8 2002 12 2.2 2003 1 -2.5 2003 2 -1.1 2003 3 6.2 2003 4 9.9 2003 5 14.8 2003 6 20.2 2003 7 24.3 2003 8 24.8 2003 9 20 2003 10 12.8 2003 11 10 2003 12 3.1 2004 1 -4 2004 2 1.7 2004 3 6.5 2004 4 12 2004 5 18.4 2004 6 21.8 2004 7 23.6 2004 8 23.5 2004 9 20.8 2004 10 13.3 2004 11 9 2004 12 3.6 2005 1 -0.4 2005 2 2.6 2005 3 4.2 2005 4 12.9 2005 5 14.9 2005 6 23.3 2005 7 25.3 2005 8 26.5 2005 9 22.9 2005 10 14.4 2005 11 9.8 2005 12 1.8 2006 1 4.9 2006 2 2.1 2006 3 6.2 2006 4 2.7