43% (2007)

58% (1983)

70% (1977)

65% (1977)

50% (1992)

55% (1976)

55% (1977)

54% (1981)

60% (1998)

55% (1999)

76% (2003)

70% (1995)

69% (2005)

60% (2002)

56% (1989)

58% (2008)

59% (1995)

56% (1982)

0% (1985)

0% (1979)