78% (2001)

73% (2001)

72% (1996)

72% (1992)

55% (2001)

65% (2007)

75% (1997)

73% (2013)

77% (1999)

67% (2000)

65% (2000)

71% (2002)

72% (2004)

55% (2003)

55% (2002)

72% (1994)

74% (2004)

69% (1992)

69% (1995)

57% (1996)