1963    -999    -999    -7.4    -8.7   -11.6   -13.5   -14.6   -13.7   -10.5   -11.7    -3.9     1.7
1964     1.7    -1.7    -5.0    -8.2   -12.0   -13.5   -11.2   -11.5   -15.8   -10.9    -2.3     2.3
1965     2.4    -0.2    -5.3    -6.5    -8.4   -12.0   -19.4   -15.6   -17.1   -11.0    -6.1     2.0
1966     1.4    -1.4    -4.3   -10.3   -10.2   -13.8   -16.0   -16.6   -11.5   -11.6    -3.3     2.0
1967     4.4    -1.2    -4.6    -7.6    -8.9   -11.5   -14.4   -14.5   -14.2    -8.2    -2.1     2.4
1968     2.7    -0.4    -4.1    -7.3    -9.1   -12.5   -15.4   -13.3   -15.6    -9.2    -2.9     1.0
1969     3.3     0.6    -4.5    -8.0   -11.1   -11.6   -15.5   -18.4   -14.3    -9.2    -2.7     2.5
1970     2.4    -1.1    -2.9    -7.7   -10.8   -13.4   -13.2   -16.5   -15.4    -8.6    -2.9     2.4
1971     2.8    -0.1    -5.6    -9.7   -13.8   -14.3   -15.8   -15.0   -12.8    -9.2    -4.5     3.5
1972     3.2    -0.7    -5.9    -7.0   -12.3   -13.3   -15.2   -11.3   -11.4   -10.1    -3.9     0.6
1973     2.6    -1.9    -6.3    -8.6    -8.7   -12.2   -14.9   -18.7   -13.0    -8.6    -2.0     0.6
1974     2.1    -0.6    -6.3    -9.3   -10.8   -13.3   -13.6   -13.6   -13.6    -8.5    -1.7     2.8
1975     3.7    -1.5    -5.2   -10.7   -11.6   -13.4   -16.0   -16.5   -15.3    -9.6    -2.4     1.2
1976     3.0    -1.4    -5.3    -9.4   -11.3   -16.2   -16.8   -18.3   -16.8   -10.8    -3.1     3.4
1977     4.3    -0.6    -5.2   -11.7   -11.3   -12.7   -10.8   -10.6   -14.5   -10.3    -4.2     2.2
1978     0.8    -0.5    -6.2    -7.3    -9.4   -13.9   -12.3   -17.8   -12.1    -9.8    -3.0     1.0
1979     2.7    -1.1    -5.6    -6.3   -12.0   -15.7   -16.2   -16.3   -14.1   -10.2    -2.2     1.7
1980     2.2    -1.6    -4.5    -7.8   -11.3   -12.8   -12.2   -14.3   -12.6   -10.2    -1.0     1.8
1981     1.4    -0.7    -3.9    -8.2   -12.2   -12.8   -12.2   -12.2   -15.6   -12.4    -4.2     0.1
1982     1.4    -1.4    -5.0    -9.6   -13.0   -13.4   -14.9   -17.9   -16.7   -12.1    -2.9     1.8
1983     3.5    -1.5    -6.2    -9.6   -12.2   -13.8   -13.9   -14.6   -10.5    -9.7    -5.2    -0.3
1984     2.8    -1.6    -5.5   -10.0    -9.5   -15.1   -19.5   -15.7   -13.5   -12.7    -3.8     2.8
1985     3.3    -3.3    -5.9    -7.9   -13.6   -11.4   -14.0   -18.7   -13.4   -10.3    -5.3    -0.4
1986     0.7     1.6    -3.9    -9.3   -12.5   -13.4   -15.7   -14.3   -10.7    -9.4    -3.6     0.7
1987     3.6     0.0    -3.4    -6.3   -13.1   -10.4   -15.0   -17.7   -17.8   -11.0    -3.3     1.6
1988     2.8    -2.0    -4.4   -10.7   -10.5   -12.8   -14.4   -13.5   -12.6    -9.0    -4.9    -0.8
1989     1.3    -0.8    -6.5   -10.2   -14.6   -14.6   -13.7   -14.2   -15.9    -9.4    -4.1     2.1
1990     2.6    -1.7    -4.7    -8.2   -11.9   -13.4    -8.9   -16.7   -18.6    -8.1    -3.4     1.4
1991     1.6    -0.3    -4.4    -8.7    -9.9   -11.2   -12.1   -12.7   -13.0   -11.4    -3.7     2.6
1992     2.6    -0.7    -4.2    -6.2    -9.2   -10.0   -12.0   -13.4   -16.4    -9.6    -3.2     0.4
1993     3.2    -1.7    -5.7   -10.6   -14.7   -16.3   -15.9   -16.3   -14.1    -9.8    -3.7     0.6
1994     2.7    -1.7    -6.4    -9.4   -12.4   -10.5   -12.0   -15.6   -13.0    -8.5    -2.7     0.1
1995     0.6    -0.5    -6.2    -6.5   -12.4   -16.1   -10.0   -16.7   -16.1    -9.5    -3.0     1.6
1996     2.4     0.6    -5.1    -9.4    -999    -999   -13.4   -12.4    -9.1    -6.8    -2.0     2.0
1997     2.2    -0.2    -5.2    -7.2   -12.6   -11.3   -15.8   -13.8   -19.0    -9.1    -3.4     2.7
1998     2.2    -0.2    -4.5   -10.5   -11.4   -12.7   -12.8   -17.9   -12.3   -10.4    -2.2     0.6
1999     1.1    -1.4    -5.8   -10.2   -11.0   -11.8    -999    -999    -999    -999    -999    -999