64% (1995)

64% (1984)

55% (2002)

73% (1987)

64% (1993)

47% (1997)

60% (1996)

50% (1997)

65% (1984)

56% (1991)

49% (1999)

57% (1997)

65% (1985)

70% (1997)

65% (2001)

72% (1983)

58% (2001)

65% (1986)

58% (2001)

67% (1981)