Wpi

1960 29.8 31.7

1961 30.0 31.6

1962 30.4 31.6

1963 30.9 31.6

1964 31.2 31.7

1965 31.8 32.8

1966 32.9 33.3

1967 33.9 33.7

1968 35.5 34.6

1969 37.7 36.3

1970 39.8 37.1

1971 41.1 38.6

1972 42.5 41.1

1973 46.2 47.4

1974 51.9 57.3

1975 55.5 59.7

1976 58.2 62.5

1977 62.1 66.2

1978 67.7 72.7

1979 76.7 83.4

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Rules Of The Rich And Wealthy

Rules Of The Rich And Wealthy

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