71% (1995)

64% (2003)

55% (2005)

69% (1992)

55% (1996)

50% (1989)

55% (1985)

50% (1982)

63% (1987)

74% (1992)

58% (2003)

75% (1992)

66% (1994)

60% (1982)

86% (1985)

0% (1985)

45% (2008)

60% (1987)

33% (2001)

60% (1988)