74% (2009)

72% (2008)

64% (2007)

68% (2001)

62% (2008)

63% (2006)

62% (2009)

62% (2007)

77% (2006)

59% (2005)

80% (2009)

63% (2007)

67% (2009)

80% (2014)

71% (2014)

48% (2010)

57% (2010)

67% (2007)

66% (2007)

66% (2013)