70% (1995)

69% (1992)

55% (2005)

55% (1996)

50% (2008)

64% (2003)

73% (1992)

58% (2003)

86% (1985)

60% (1988)

66% (1994)

67% (1987)

33% (2001)

0% (1989)

0% (1985)

54% (1981)

80% (1987)

80% (1988)

0% (1982)

60% (1991)