58% (1997)

60% (1989)

59% (2002)

64% (2002)

78% (1992)

58% (1998)

55% (1992)

30% (1992)

40% (1992)

61% (1996)

61% (1990)

64% (1995)

55% (1992)

43% (1994)

42% (2002)

62% (1999)

25% (1992)

30% (1991)

36% (1988)

80% (1991)