1960  1.5  1.0  3.6  1.5  3.6
1961  1.1  3.4  5.4  2.3  3.4
1962  1.1  4.5  6.7  4.5  4.7
1963  1.2  2.5  7.7  3.0  4.8
1964  1.4  3.9  3.9  2.3  3.4
1965  1.6  4.6  6.5  3.4  2.6
1966  2.8  3.7  6.0  3.5  2.7
1967  2.8  2.4  4.0  1.5  2.7
1968  4.2  4.8  5.5  1.8  4.5
1969  5.0  5.2  5.1  2.6  6.4
1970  5.9  6.5  7.6  3.7  5.5
1971  4.3  9.5  6.3  5.3  5.5
1972  3.6  6.8  4.9  5.4  5.9
1973  6.2  8.4 12.0  7.0  7.5
1974 10.9 16.0 24.6  7.0 14.0
1975  9.2 24.2 11.7  5.9 11.7
1976  5.8 16.5  9.3  4.5  9.6
1977  6.4 15.9  8.1  3.7  9.4
1978  7.6  8.3  3.8  2.7  9.1
1979 11.4 13.4  3.6  4.1 10.7
1980 13.6 18.0  8.0  5.5 13.3