67% (2003)

76% (1986)

53% (1994)

68% (1986)

77% (1986)

66% (1983)

74% (1990)

61% (2012)

58% (2003)

68% (1993)

69% (1988)

53% (1999)

65% (1989)

76% (1991)

56% (1991)

67% (1986)

56% (1996)

47% (2005)

67% (2009)

71% (1991)