83% (2005)

69% (2001)

55% (2003)

83% (2005)

66% (1998)

79% (2004)

63% (2006)

66% (1991)

79% (2002)

62% (2006)

75% (2002)

75% (1995)

75% (1985)

85% (1996)

68% (2007)

81% (2001)

77% (2005)

81% (2005)

70% (2004)

68% (2008)