80% (1999)

67% (2003)

77% (2002)

75% (2009)

66% (2008)

65% (2008)

55% (2008)

62% (2010)

58% (2009)

73% (2012)

61% (2005)

56% (2007)

67% (2005)

69% (2010)

62% (2005)

77% (2005)

72% (2009)

64% (2000)

71% (2006)

71% (2003)