74% (1997)

66% (1995)

66% (1998)

74% (1993)

62% (2008)

59% (2009)

56% (1998)

64% (2016)

76% (1997)

68% (1989)

79% (2015)

65% (1991)

64% (1994)

64% (1985)

70% (2015)

77% (2001)

72% (1984)

67% (1987)

77% (2011)

72% (1989)