63% (2001)

69% (1997)

65% (2001)

51% (2001)

64% (1966)

57% (1983)

73% (1971)

62% (1963)

79% (1973)

63% (1990)

57% (1974)

65% (1994)

60% (2002)

59% (1986)

68% (1970)

58% (1998)

70% (1991)

76% (1976)

71% (1967)

65% (1980)