67% (2007)

65% (2009)

74% (2006)

70% (2011)

70% (2005)

54% (2005)

60% (2009)

70% (2007)

62% (2003)

49% (2006)

62% (2010)

62% (2006)

76% (2011)

70% (2009)

64% (2003)

61% (2012)

60% (2004)

65% (2011)

71% (2006)

62% (2003)