84% (2004)

84% (1997)

66% (2006)

72% (2001)

77% (2000)

73% (1993)

61% (2005)

63% (2001)

64% (2007)

76% (2005)

49% (2008)

69% (2007)

59% (2005)

0% (1986)

55% (2005)

69% (2000)

60% (2001)

0% (1986)

0% (2001)

63% (1996)