1971 -999 -999 80.4 105.5 46.8 58.1 162.1 81.7 97.3 49.1 38.6 63.0 1972 319.2 92.2 140.6 191.0 114.2 197.9 192.1 77.0 83.6 96.3 105.6 404.0 1973 293.1 179.0 120.9 180.0 83.8 97.2 56.1 32.5 48.5 43.0 149.8 22.0 1974 81.2 10.8 144.1 63.0 25.8 74.1 58.3 98.1 123.8 33.4 21.5 35.3 1975 140.6 31.8 30.9 20.9 5.2 44.0 3.3 132.0 109.3 8.4 53.4 13.6 1976 91.5 3.3 37.8 51.9 32.6 26.2 53.9 47.0 53.7 17.0 19.5 62.0 1977 62.6 125.1 72.0 151.9 4.6 104.2 5.8 98.1 100.5 35.8 42.4 32.4 1978 161.7 81.8 37.3 83.6 2.8 37.5 28.8 11.9 14.5 50.1 72.7 21.6 1979 25.6 36.9 44.8 6.9 4.9 19.1 5.5 7.0 7.7 7.4 6.8 6.1 1980 3.4 5.4 43.4 5.8 23.6 11.9 0.0 22.9 21.4 8.7 8.4 10.7 1981 4.3 16.2 15.7 36.9 25.5 13.0 13.0 75.1 48.2 27.5 13.3 10.8 1982 6.6 19.3 44.7 104.3 82.3 51.0 44.4 20.5 79.9 35.0 40.4 28.3 1983 55.4 154.9 122.7 142.4 109.5 73.9 94.8 82.3 110.1 90.9 46.2 146.3 1984 46.8 58.6 34.8 16.5 32.9 11.0 2.2 28.5 93.1 35.4 10.7 35.3 1985 18.3 46.0 22.2 52.3 54.5 15.1 79.3 31.1 28.5 11.8 4.4 68.7 1986 55.8 4.2 132.2 86.1 50.3 143.1 63.4 72.3 59.7 14.0 11.0 34.6 1987 54.5 20.4 140.8 49.6 67.8 17.3 35.4 62.4 24.3 19.8 36.7 16.8 1988 80.5 15.8 33.3 57.4 41.8 13.7 64.5 54.5 72.5 82.5 43.9 88.0 1989 39.1 35.2 106.4 121.8 75.2 90.3 154.1 61.4 46.8 36.8 9.0 56.4 1990 20.5 49.5 40.0 92.8 133.3 22.0 58.8 7.2 60.1 3.4 29.0 3.0 1991 8.3 70.6 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999