55% (1979)

58% (2002)

62% (1979)

66% (2009)

56% (1982)

67% (1976)

61% (1979)

50% (1989)

61% (2007)

47% (1990)

69% (2005)

55% (1999)

55% (1976)

43% (2007)

55% (2006)

66% (1995)

43% (1994)

85% (1985)

0% (2003)

57% (1983)