85% (2004)

81% (1988)

80% (1986)

79% (1989)

83% (1997)

72% (2002)

79% (1995)

78% (1992)

64% (1994)

74% (1991)

78% (1985)

73% (1993)

63% (1986)

50% (2014)

75% (2000)

72% (1985)

61% (2000)

78% (1988)

82% (1993)

66% (2013)