1958 -41.0 -41.5 -47.4 -57.5 -66.0 -74.1 -999 -81.5 -80.6 -68.8 -50.4 -37.0 1959 -37.9 -41.1 -46.9 -56.5 -65.9 -74.6 -79.3 -81.5 -80.4 -73.5 -61.6 -42.5 1960 -37.9 -41.2 -46.9 -56.1 -66.8 -74.1 -80.5 -999 -78.7 -69.1 -43.5 -36.4 1961 -38.6 -42.1 -47.4 -55.6 -64.8 -71.6 -78.8 -80.9 -79.3 -72.2 -59.2 -41.8 1962 -41.5 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 1963 -999 -999 -999 -999 -68.7 -76.0 -80.9 -84.1 -80.7 -71.3 -50.7 -39.8 1964 -41.4 -44.0 -48.7 -58.5 -69.2 -74.6 -78.8 -79.5 -76.1 -62.3 -40.6 -39.7 1965 -40.6 -42.2 -46.0 -56.3 -65.2 -72.4 -80.3 -82.8 -80.8 -70.8 -54.5 -39.1 1966 -39.3 -42.4 -46.5 -55.1 -65.3 -72.6 -79.0 -84.0 -80.8 -71.2 -48.0 -38.9 1967 -40.8 -41.8 -47.0 -57.1 -67.0 -73.8 -78.8 -82.7 -77.7 -63.6 -46.3 -40.1 1968 -39.8 -40.8 -47.0 -56.4 -66.6 -75.6 -81.7 -84.3 -80.4 -67.9 -40.1 -37.3 1969 -39.3 -41.1 -46.5 -56.2 -64.8 -73.1 -79.0 -82.0 -80.5 -75.7 -55.5 -40.0 1970 -41.0 -42.5 -47.4 -56.0 -67.0 -73.7 -79.2 -80.4 -79.0 -70.7 -52.7 -41.8 1971 -40.1 -42.0 -46.9 -56.1 -63.1 -73.3 -79.2 -83.2 -80.2 -69.5 -51.6 -40.5 1972 -40.6 -41.6 -46.8 -56.1 -65.6 -74.4 -76.4 -80.7 -79.8 -69.0 -53.1 -38.8 1973 -39.1 -42.3 -47.4 -56.8 -65.4 -74.1 -79.1 -81.6 -78.9 -73.2 -51.8 -40.3 1974 -40.9 -41.5 -47.3 -56.8 -67.8 -75.3 -79.7 -84.4 -79.2 -68.4 -43.6 -37.2 1975 -38.7 -41.4 -47.6 -56.8 -67.0 -74.3 -77.5 -77.2 -76.0 -74.7 -57.5 -39.0 1976 -40.1 -42.2 -47.6 -55.9 -67.4 -75.3 -80.0 -81.5 -79.3 -72.2 -47.9 -42.7 1977 -41.1 -42.6 -49.4 -57.8 -66.8 -70.9 -78.8 -81.2 -78.4 -68.8 -45.8 -37.8 1978 -39.7 -42.5 -48.0 -57.5 -68.1 -75.5 -82.9 -82.9 -80.9 -71.2 -47.9 -43.1 1979 -41.4 -43.1 -47.2 -56.8 -68.3 -77.2 -82.8 -86.5 -82.0 -66.0 -51.6 -40.1 1980 -40.2 -41.5 -47.1 -54.4 -65.8 -73.0 -80.8 -84.5 -83.0 -72.3 -53.8 -38.0 1981 -40.2 -42.3 -48.3 -56.3 -67.6 -74.5 -80.7 -86.1 -80.3 -72.1 -53.7 -38.4 1982 -40.8 -43.5 -46.4 -55.3 -999 -999 -999 -999 -999 -999 -999 -999 1983 -999 -999 -999 -58.7 -69.3 -76.8 -82.7 -87.1 -84.3 -74.1 -55.2 -42.3 1984 -41.4 -42.2 -48.8 -59.8 -67.9 -74.6 -83.8 -85.6 -82.0 -71.9 -55.4 -43.3 1985 -41.4 -43.1 -49.5 -58.3 -68.8 -76.4 -82.1 -84.7 -83.0 -77.0 -63.9 -45.6 1986 -42.7 -45.9 -48.9 -58.4 -67.3 -75.0 -82.1 -85.3 -82.2 -75.3 -53.0 -44.0 1987 -41.9 -42.8 -48.5 -59.0 -69.8 -76.3 -81.9 -83.5 -84.2 -77.8 -67.7 -42.2 1988 -41.3 -43.4 -50.1 -59.5 -68.4 -74.6 -80.9 -81.3 -74.1 -64.6 -43.8 -39.0 1989 -40.4 -43.5 -49.6 -57.8 -68.4 -76.6 -82.2 -83.6 -81.8 -74.5 -61.4 -43.3 1990 -41.3 -43.6 -48.5 -58.9 -66.2 -75.0 -79.7 -84.9 -79.2 -75.4 -66.7 -46.7 1991 -41.4 -44.8 -49.0 -56.3 -66.5 -74.5 -80.9 -83.5 -78.4 -72.1 -51.8 -40.5 1992 -39.8 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999