59% (1993)

76% (1997)

77% (1996)

75% (1999)

67% (1992)

55% (1995)

66% (1993)

74% (2002)

62% (2002)

60% (1997)

71% (1990)

40% (1996)

64% (1998)

60% (1996)

60% (2000)

62% (1991)

70% (1998)

67% (1993)

60% (1989)

60% (1994)