49% (2001)

74% (1992)

61% (1994)

95% (1987)

53% (1997)

56% (1993)

56% (2001)

67% (2000)

59% (1994)

59% (1993)

41% (1996)

71% (1998)

62% (1992)

55% (1994)

50% (1994)

60% (1991)

45% (1994)

70% (1988)

58% (1983)

62% (1993)