81% (1994)

75% (1996)

80% (1994)

54% (1982)

78% (1986)

69% (2008)

61% (2008)

63% (1985)

74% (1999)

67% (2004)

71% (1992)

100% (1993)

64% (1999)

65% (1997)

56% (2004)

55% (2004)

68% (1993)

63% (1990)

62% (1986)

62% (1987)