46% (2007)

32% (1997)

60% (1992)

70% (1988)

0% (2009)

74% (1983)

64% (1996)

52% (2003)

68% (1997)

70% (2009)

70% (2010)

68% (1952)

65% (1992)

48% (1991)

71% (2003)

38% (2008)

69% (2005)

44% (1999)

30% (2009)

62% (1953)