84% (2005)

74% (2009)

60% (2005)

83% (2002)

70% (2008)

62% (2003)

70% (1996)

78% (2006)

79% (2010)

60% (2001)

53% (2000)

58% (2008)

52% (2005)

82% (2004)

0% (2006)

73% (2010)

59% (2000)

70% (2007)

60% (2000)