67% (2007)

78% (2010)

70% (2007)

76% (2011)

75% (2006)

70% (2011)

71% (2004)

65% (2009)

59% (2003)

62% (2012)

74% (2007)

62% (2010)

70% (2005)

55% (2005)

60% (2004)

63% (2001)

71% (2006)

65% (2009)

63% (2006)

65% (2004)