10% (1990)

47% (1993)

53% (1995)

74% (1995)

54% (1986)

59% (1999)

0% (1994)

70% (1996)

64% (1986)

100% (1997)

56% (1996)

53% (1986)

80% (1996)

78% (1986)

49% (1989)

32% (2000)

58% (1983)

70% (1992)

49% (2001)

70% (1996)