64% (2009)

68% (2004)

63% (2011)

59% (2011)

62% (2011)

59% (2007)

63% (2001)

70% (2009)

56% (2007)

52% (2006)

74% (2002)

64% (2012)

70% (2002)

74% (2011)

60% (2008)

70% (2009)

66% (2006)

66% (2009)

64% (2011)

64% (2004)