68% (2003)

65% (2005)

65% (2006)

62% (2013)

74% (2005)

70% (2010)

63% (2010)

49% (2006)

46% (2008)

57% (2003)

59% (2009)

54% (2007)

52% (2002)

73% (2008)

34% (2008)

50% (2009)

52% (2005)

56% (1967)

48% (2004)

50% (2001)