79% (2001)

73% (2001)

78% (1999)

72% (1996)

71% (1992)

75% (1997)

65% (2000)

71% (2002)

66% (2002)

67% (2000)

69% (2011)

72% (2004)

55% (2001)

56% (1994)

58% (2000)

63% (1998)

69% (1995)

58% (1996)

69% (2013)

73% (2004)