73% (2005)

72% (2003)

57% (2004)

46% (2002)

53% (2002)

46% (2003)

43% (2005)

63% (2005)

52% (2003)

54% (2002)

48% (2004)

40% (2002)

30% (1998)

50% (2003)

37% (2001)

0% (1999)

20% (2001)

10% (2002)