78% (2001)

71% (1992)

73% (2001)

66% (2000)

75% (1997)

72% (1996)

65% (2007)

77% (1999)

69% (1995)

55% (2002)

55% (1992)

66% (2002)

72% (2004)

69% (2011)

73% (2004)

70% (2002)

68% (1995)

73% (2013)

60% (2000)

67% (2000)