76% (2008)

68% (2003)

74% (2008)

55% (2007)

47% (2007)

62% (1999)

60% (2005)

63% (2006)

58% (1999)

49% (2000)

35% (2007)

59% (2005)

45% (2005)

58% (2009)

38% (2005)