69% (1992)

70% (1995)

59% (2003)

50% (2008)

55% (2005)

64% (2003)

25% (2006)

55% (1985)

66% (1994)

63% (1987)

80% (1988)

75% (1992)

33% (2001)

50% (1989)

74% (1992)

86% (1985)

60% (1987)

60% (1982)

0% (1993)

60% (1988)