71% (1975)

64% (1966)

77% (1980)

58% (1977)

50% (1992)

55% (1971)

80% (1963)

52% (1973)

34% (1987)

60% (1973)

40% (1972)

40% (1975)

74% (1969)

67% (1965)

0% (1964)

32% (1972)

0% (1962)

29% (1988)

0% (2001)

0% (1969)