79% (1994)

77% (1993)

75% (1994)

75% (1991)

75% (1979)

76% (1987)

70% (1985)

70% (1969)

58% (1975)

78% (1988)

50% (1992)

78% (1989)

73% (1989)

79% (1989)

76% (1988)

57% (2001)

70% (1973)

63% (2017)

80% (1989)

74% (1989)