80% (1994)

77% (1993)

75% (1994)

75% (1991)

75% (1979)

80% (1989)

70% (1985)

64% (2014)

74% (1975)

54% (1988)

62% (1979)

56% (2002)

70% (1973)

54% (1987)

70% (2000)

79% (1989)

57% (1975)

75% (1988)

78% (1989)

61% (1991)