62% (2015)

61% (2015)

50% (2003)

77% (1997)

70% (2010)

64% (2010)

75% (1999)

70% (2004)

77% (2006)

72% (2000)

72% (2003)

76% (2002)

61% (2005)

58% (2001)

74% (2001)

69% (2004)

73% (2008)

68% (2006)

62% (2000)

55% (2005)