80% (1999)

77% (2002)

75% (2009)

66% (2008)

58% (2009)

68% (2003)

61% (2005)

73% (2012)

54% (2008)

68% (2006)

69% (2010)

61% (2005)

77% (2005)

64% (2008)

56% (2007)

67% (2005)

62% (2002)

72% (2009)

62% (2010)

70% (2006)