78% (1998)

76% (2001)

59% (2002)

56% (2002)

67% (2005)

68% (2002)

41% (2006)

60% (2001)

37% (2000)

54% (1999)

61% (2001)

46% (1999)

66% (2000)

57% (2002)

47% (2000)

30% (2000)

58% (2001)

61% (1999)

56% (2003)

65% (2006)