73% (2005)

73% (2003)

57% (2004)

44% (2005)

53% (2002)

46% (2003)

63% (2005)

45% (2002)

30% (1998)

52% (2003)

60% (2002)

48% (2004)

37% (2001)

20% (2001)

40% (2002)

0% (1999)

50% (2003)

10% (2002)