73% (2003)

73% (2005)

53% (2002)

57% (2004)

45% (2002)

63% (2005)

43% (2005)

46% (2003)

52% (2003)

30% (1998)

10% (1999)

48% (2004)

20% (2001)

37% (2001)

45% (2002)

40% (2002)

50% (2003)

10% (2002)