78% (1998)

56% (2002)

41% (2006)

67% (2005)

59% (2002)

75% (2001)

62% (2001)

67% (2002)

60% (2001)

37% (2000)

46% (1999)

57% (2002)

54% (1999)

66% (2000)

30% (2000)

47% (2000)

61% (1999)

67% (2006)

58% (2001)

69% (2001)