1932.5  1932  -10.1568 
1933.5  1933  -8.8114 
1934.5  1934  -6.7221 
1935.5  1935  -8.1598 
1936.5  1936  -10.9146 
1937.5  1937  -12.1863 
1938.5  1938  -17.7347 
1939.5  1939  -17.5015 
1940.5  1940  -16.4493 
1941.5  1941  -13.2390 
1942.5  1942  -10.3529 
1943.5  1943  -11.0882 
1944.5  1944  -9.0864 
1945.5  1945  -7.6992 
1946.5  1946  -15.7977 
1947.5  1947  -19.1010 
1948.5  1948  -13.0195 
1949.5  1949  -13.9232 
1950.5  1950  -14.4187 
1951.5  1951  -13.7444 
1952.5  1952  -15.3826 
1953.5  1953  -11.5371 
1954.5  1954  -5.8729 
1955.5  1955  -8.9939 
1956.5  1956  -18.4560 
1957.5  1957  -19.0129 
1958.5  1958  -20.5406 
1959.5  1959  -20.0166 
1960.5  1960  -22.3656 
1961.5  1961  -11.1517 
1962.5  1962  -8.0728 
1963.5  1963  -9.1719 
1964.5  1964  -6.3490 
1965.5  1965  -3.4100 
1966.5  1966  -8.0670 
1967.5  1967  -11.0797 
1968.5  1968  -11.9371 
1969.5  1969  -9.4805 
1970.5  1970  -12.4273 
1971.5  1971  -8.8893 
1972.5  1972  -11.9444 
1973.5  1973  -11.4152 
1974.5  1974  -13.2288 
1975.5  1975  -9.1969 
1976.5  1976  -10.5856 
1977.5  1977  -10.6711 
1978.5  1978  -16.3099 
1979.5  1979  -11.6614 
1980.5  1980  -8.4493 
1981.5  1981  -16.8132 
1982.5  1982  -16.1030 
1983.5  1983  -13.9852 
1984.5  1984  -11.4836 
1985.5  1985  -10.5605 
1986.5  1986  -10.4662 
1987.5  1987  -6.8092 
1988.5  1988  -14.4152 
1989.5  1989  -17.6631 
1990.5  1990  -16.8000 
1991.5  1991  -20.1618 
1992.5  1992  -15.5094 
1993.5  1993  -12.4548 
1994.5  1994  -14.5280 
1995.5  1995  -12.1062 
1996.5  1996  -7.1907 
1997.5  1997  -9.4346 
1998.5  1998  -9.9516 
1999.5  1999  -9.1933 
2000.5  2000  -13.5099 
2001.5  2001  -12.5968 
2002.5  2002  -13.0841 
2003.5  2003  -15.3100 
2004.5  2004  -11.3819 
2005.5  2005  -11.9181 
2006.5  2006  -8.4830 
2007.5  2007  -5.8484 
2008.5  2008  -6.1752 
2009.5  2009  -2.9114 
2010.5  2010  -6.1678 
2011.5  2011  -7.6869 
2012.5  2012  -8.1073 
2013.5  2013  -7.8757 
2014.5  2014  -7.1961 
2015.5  2015  -13.8874 
2016.5  2016  -10.0009