67% (2007)

63% (2003)

78% (2010)

70% (2007)

70% (2011)

76% (2011)

66% (2009)

75% (2006)

62% (2012)

65% (2011)

60% (2004)

70% (2005)

74% (2007)

55% (2005)

54% (2012)

60% (2009)

63% (2010)

64% (2011)

63% (2001)

71% (2006)