62% (1994)

77% (1996)

76% (1997)

75% (1999)

66% (1992)

70% (1990)

74% (2002)

41% (1996)

61% (2000)

60% (1997)

62% (2002)

66% (1993)

60% (1996)

58% (1995)

60% (1990)

65% (1998)

55% (1995)

57% (1992)

64% (2002)

0% (1993)