73% (1995)

77% (1973)

52% (1970)

65% (1967)

64% (1981)

55% (1993)

76% (1976)

78% (1983)

61% (1969)

69% (1966)

60% (2012)

60% (1995)

72% (2002)

57% (1972)

69% (1973)

48% (1984)

50% (1967)

58% (1982)

58% (2007)

55% (1977)