78% (2001)

73% (2001)

65% (2000)

72% (1992)

77% (1999)

72% (1996)

75% (1997)

68% (2000)

69% (2011)

72% (2004)

71% (1994)

54% (1994)

67% (2002)

58% (2000)

58% (2003)

71% (2002)

63% (1998)

70% (1995)

46% (2001)

69% (1992)