63% (1980)

0% (1967)

63% (1992)

0% (1970)

50% (1991)

57% (1980)

0% (1973)

63% (1978)

0% (1991)

75% (1976)

50% (1981)

58% (1979)

64% (1966)

57% (1973)

50% (1969)

50% (1974)

60% (1957)

58% (1971)

60% (1970)

60% (1961)