1956 -999.0 -3.1 -9.2 -14.3 -13.7 -15.4 -16.6 -20.9 -15.2 -13.8 -6.1 -0.7 1957 -0.5 -4.8 -9.3 -8.6 -14.2 -15.5 -16.9 -14.4 -14.6 -10.8 -7.3 -1.9 1958 -1.9 -6.7 -9.2 -11.7 -11.4 -20.6 -15.5 -19.4 -20.5 -14.9 -8.1 -3.5 1959 -3.3 -6.7 -8.9 -12.6 -13.8 -15.0 -17.1 -17.2 -22.1 -12.0 -9.1 -1.9 1960 -2.2 -5.0 -13.0 -16.1 -18.0 -18.6 -22.2 -16.5 -16.3 -14.2 -6.7 -2.7 1961 -2.1 -3.9 -9.3 -12.8 -12.9 -15.4 -12.8 -14.8 -13.9 -14.1 -7.6 -4.5 1962 -3.8 -4.7 -10.2 -15.2 -19.9 -17.3 -20.8 -17.7 -16.0 -12.1 -6.4 -3.5 1963 -2.0 -6.4 -12.3 -17.8 -18.0 -14.2 -18.3 -15.5 -15.0 -16.2 -9.1 -4.0 1964 -1.9 -5.4 -11.3 -15.9 -18.8 -14.2 -17.7 -15.1 -21.8 -14.0 -5.5 -2.1 1965 -1.0 -3.6 -10.7 -14.8 -15.1 -19.9 -18.4 -17.5 -20.6 -13.6 -9.6 -2.2 1966 -2.8 -4.2 -6.9 -13.2 -14.3 -17.5 -12.5 -20.6 -18.0 -14.7 -6.3 -2.2 1967 -0.7 -6.6 -9.9 -13.2 -15.8 -13.5 -13.4 -18.7 -14.7 -16.1 -6.0 -2.7 1968 -2.3 -5.7 -9.9 -15.0 -15.3 -13.3 -18.1 -17.4 -18.3 -12.3 -6.3 -3.0 1969 -0.5 -5.0 -10.1 -14.1 -18.6 -15.4 -19.6 -24.7 -16.5 -12.3 -8.5 -2.7 1970 -1.7 -5.7 -9.5 -13.1 -12.6 -16.1 -18.2 -17.8 -15.7 -13.0 -6.0 -1.9 1971 -0.7 -5.1 -10.8 -12.8 -12.3 -14.7 -17.4 -15.1 -15.2 -12.1 -7.9 -1.8 1972 -0.3 -4.8 -9.4 -12.5 -19.7 -12.2 -16.8 -12.5 -18.3 -17.2 -8.5 -2.9 1973 -1.8 -5.6 -12.0 -11.0 -13.3 -12.4 -19.4 -16.0 -14.2 -12.4 -5.1 -3.4 1974 -0.3 -6.7 -10.8 -15.1 -15.1 -14.1 -16.7 -13.3 -17.2 -8.7 -5.5 -0.2 1975 -0.8 -5.7 -8.5 -16.3 -12.0 -13.9 -15.1 -20.3 -20.2 -13.9 -5.5 -3.2 1976 -1.1 -5.1 -11.8 -16.5 -18.3 -13.0 -17.3 -20.6 -16.4 -10.8 -6.2 -1.3 1977 0.0 -4.7 -8.6 -14.0 -14.0 -16.9 -16.4 -16.1 -22.0 -15.7 -8.2 -2.5 1978 -2.5 -4.8 -9.8 -14.1 -14.4 -13.4 -15.2 -20.0 -18.0 -15.9 -6.4 -2.4 1979 -2.6 -6.3 -11.0 -12.4 -14.9 -16.5 -19.1 -18.4 -17.7 -13.1 -7.3 -1.6 1980 -1.1 -5.2 -7.7 -10.8 -14.8 -16.8 -10.5 -14.7 -14.6 -14.3 -4.9 -2.4 1981 -2.4 -6.0 -8.8 -15.2 -17.0 -15.8 -14.3 -11.1 -14.9 -13.6 -7.6 -3.0 1982 -2.3 -5.6 -13.2 -17.3 -13.6 -19.2 -12.6 -24.8 -21.1 -13.4 -6.9 -1.0 1983 -0.7 -4.0 -11.0 -12.4 -12.6 -13.7 -20.1 -16.3 -13.4 -14.9 -9.6 -2.8 1984 -1.0 -4.8 -9.0 -11.8 -12.2 -17.0 -17.4 -14.1 -16.0 -17.0 -8.7 -1.6 1985 -1.0 -6.3 -8.4 -11.5 -18.0 -14.2 -20.8 -16.7 -16.9 -13.9 -7.8 -4.0 1986 -2.7 -1.4 -9.2 -12.9 -14.1 -18.3 -18.3 -16.1 -14.8 -11.4 -7.5 -2.7 1987 -0.9 -5.0 -11.0 -14.1 -18.3 -14.4 -13.7 -22.2 -16.7 -12.5 -7.3 -2.2 1988 -1.4 -5.8 -9.6 -14.3 -10.4 -13.3 -18.3 -16.1 -15.2 -10.6 -8.2 -3.4 1989 -3.0 -6.7 -12.7 -15.7 -18.0 -16.6 -16.8 -14.3 -11.3 -9.1 -10.5 -1.1 1990 -1.7 -6.1 -11.3 -11.1 -14.1 -18.9 -15.4 -17.1 -17.2 -14.2 -7.6 -2.4 1991 -2.7 -4.5 -9.4 -10.3 -16.0 -11.6 -12.8 -13.9 -18.5 -12.5 -6.6 -1.1 1992 -1.5 -3.9 -9.4 -15.1 -17.1 -14.8 -20.3 -15.6 -19.9 -13.5 -8.1 -4.4 1993 -1.0 -3.7 -10.8 -14.4 -19.6 -18.7 -19.9 -19.1 -17.4 -14.9 -8.7 -4.9 1994 -3.5 -6.1 -11.6 -17.1 -17.6 -11.6 -15.7 -20.5 -13.9 -12.0 -8.3 -3.8 1995 -3.2 -6.7 -10.3 -15.8 -18.9 -16.0 -9.0 -14.3 -16.5 -14.6 -6.6 -3.7 1996 -2.6 -5.3 -9.7 -12.4 -18.2 -14.1 -13.5 -12.6 -14.1 -12.8 -5.6 -2.6 1997 -2.2 -4.9 -9.5 -16.6 -15.2 -11.9 -16.7 -18.1 -15.4 -14.1 -6.7 -1.4 1998 -1.8 -5.8 -12.4 -16.7 -15.9 -16.1 -20.5 -14.8 -19.1 -15.9 -6.8 -2.9 1999 -7.2 -6.7 -10.7 -15.6 -18.0 -13.7 -18.2 -17.2 -18.0 -12.9 -9.1 -4.7 2000 -3.1 -5.6 -11.3 -12.8 -17.9 -16.5 -15.3 -14.6 -12.2 -16.2 -5.4 -2.6 2001 -1.5 -5.7 -8.7 -13.2 -13.1 -16.5 -13.5 -18.4 -16.3 -14.5 -7.2 -3.1 2002 -1.2 -6.5 -7.8 -10.6 -11.5 -12.6 -13.7 -17.5 -15.5 -12.0 -6.6 -3.9 2003 -1.5 -3.3 -9.2 -13.1 -16.3 -16.0 -19.9 -17.5 -14.4 -13.0 -7.1 -2.0 2004 -0.8 -3.0 -9.9 -13.6 -13.1 -15.9 -19.5 -14.8 -17.6 -11.5 -6.5 -1.0 2005 -0.9 -5.7 -9.7 -15.2 -16.1 -14.3 -19.0 -17.3 -14.7 -12.9 -7.0 -0.1 2006 -2.1 -6.2 -9.8 -9.0 -21.0 -15.7 -16.8 -14.5 -16.8 -14.2 -6.8 -2.6 2007 -1.5 -4.4 -8.1 -12.0 -10.6 -13.7 -10.8 -14.0 -14.7 -13.5 -5.5 -3.8 2008 -3.1 -6.3 -11.1 -12.4 -13.0 -15.2 -14.8 -19.1 -18.5 -14.4 -6.6 -2.6 2009 -2.5 -4.2 -9.8 -14.6 -11.7 -14.3 -12.8 -16.4 -12.9 -13.0 -7.2 -2.6 2010 -0.6 -5.0 -10.6 -15.9 -16.0 -14.4 -19.7 -19.8 -13.5 -13.3 -9.0 -2.3 2011 -0.9 -8.1 -9.0 -12.0 -17.0 -17.5 -13.5 -13.8 -15.8 -14.5 -7.5 -3.6 2012 -2.5 -6.3 -10.6 -13.3 -17.2 -15.3 -20.9 -18.3 -16.5 -11.2 -6.6 -1.7 2013 -0.9 -5.5 -12.8 -15.2 -15.4 -14.5 -17.0 -17.1 -10.5 -12.9 -6.3 -2.9 2014 -1.1 -4.5 -12.0 -15.9 -14.0 -18.4 -18.0 -18.1 -13.0 -11.0 -5.2 -2.4 2015 -2.0 -4.7 -10.6 -18.6 -20.2 -15.6 -19.7 -17.3 -16.4 -15.2 -7.4 -2.4 2016 -2.9 -6.7 -12.5 -14.5 -13.7 -19.3 -18.2 -14.1 -19.3 -12.4 -5.0 -1.8 2017 -1.1 -4.4 -9.8 -13.7 -14.9 -20.7 -16.1 -16.6 -18.1 -14.3 -6.6 -3.9 2018 -2.1 -5.1 -12.0 -10.9 -15.1 -14.7 -13.1 -16.5 -18.3 -14.0 -7.7 -3.0 2019 -2.3 -4.4 -11.7 -14.0 -16.8 -17.4 -15.0 -13.8 -16.9 -13.7 -6.1 -1.7 2021 -3.0 -4.8 -9.2 -15.4 -17.0 -18.0 -15.8 -12.6 -14.5 -10.4 -9.0 -2.0 2022 -3.0 -5.2 -9.3 -15.0 -12.8 -13.7 -16.2 -17.5 -15.5 -9.9 -8.6 -3.3 2023 -2.9 -4.5 -10.1 -11.5 -18.5 -15.7 -19.2 -21.1 -13.1 -13.6 -8.1 -3.6