67% (2003)

54% (1994)

76% (1986)

73% (1990)

68% (1988)

58% (2003)

77% (1986)

68% (1993)

56% (1991)

61% (2012)

68% (1986)

67% (1983)

71% (1991)

66% (1986)

59% (2015)

56% (1996)

47% (2005)

54% (1999)

64% (1989)

58% (2009)