1957 1958 1962 1965 1966 1970 1975 1978 1979 1990 1995 | 100 100 100 100 100 100 100 100 100 100 100 | 59.6 79.2 75.2 72.7 75.0 82.4 82.3 82.4 83.7 74.9 69.0 | 0.80 1.7 0.9 2.9 3.0 2.6 4.1 4.3 4.3 3.1 2.19 | 7.0 11.2 10.4 13.0 12.3 10.5 11.8 11.7 11.7 20.0 27.0 | 32.2 7.0 11.9 10.6 9.0 4.1 1.4 1.3 — — — | 0.4 0.9 1.6 0.8 0.6 0.4 0.4 0.3 0.3 2.0 1.9 |