66% (2009)

72% (1975)

63% (2006)

59% (2008)

68% (1977)

66% (1992)

71% (1981)

67% (2008)

0% (1995)

54% (1992)

61% (2003)

60% (2007)

64% (1997)

60% (1982)

66% (1995)

58% (2007)

58% (2002)

62% (2000)

66% (2009)

54% (1985)