73% (2005)

73% (2003)

57% (2004)

64% (2005)

53% (2002)

46% (2003)

43% (2005)

46% (2002)

50% (2003)

52% (2003)

30% (1998)

48% (2004)

34% (2001)

24% (2002)

49% (2002)

10% (1999)

15% (2001)

10% (2002)