71% (2002)

60% (1986)

58% (2004)

67% (2000)

78% (1993)

59% (1990)

50% (1984)

71% (1993)

52% (1997)

100% (1990)

54% (1991)

48% (1985)

73% (1996)

63% (1992)

69% (1989)

60% (1989)

67% (1994)

57% (1987)

60% (1995)

50% (1990)