78% (2006)

59% (2006)

62% (2003)

62% (2001)

58% (2006)

67% (2006)

58% (2006)

64% (2005)

52% (2006)

59% (2003)

57% (2007)

44% (2006)

51% (2005)

59% (2006)

45% (2006)

43% (2004)

49% (2007)

45% (2002)

30% (2003)

27% (2007)