80% (1994)

81% (1994)

77% (1986)

76% (1996)

69% (2008)

68% (1993)

66% (2006)

63% (1985)

76% (2001)

67% (2004)

64% (1999)

54% (1982)

61% (2008)

62% (1980)

60% (1983)

62% (1994)

62% (1987)

74% (1999)

62% (1986)

65% (1997)