68% (1992)

70% (2005)

54% (1991)

72% (1984)

80% (1995)

0% (1997)

58% (2003)

79% (1982)

68% (2002)

74% (1981)

80% (1997)

64% (1980)

92% (2003)

60% (1983)

60% (2002)

50% (1987)

66% (2001)

53% (1980)

40% (1990)

76% (2005)