76% (1997)

51% (2002)

71% (1999)

51% (2001)

70% (1999)

66% (2001)

20% (2000)

50% (1999)

49% (1998)

79% (2000)

60% (2001)

0% (2000)

55% (2000)

0% (2003)

25% (2001)

44% (2002)