77% (2000)

78% (2010)

63% (1993)

69% (2001)

76% (2009)

74% (2004)

73% (2002)

71% (1998)

76% (1993)

76% (1994)

73% (1996)

69% (2000)

73% (2003)

34% (2010)

67% (2000)

71% (1998)

82% (1999)

66% (1996)

55% (2009)

77% (2001)