41% (1998)

32% (1997)

10% (1988)

68% (1995)

64% (1995)

27% (1997)

34% (1995)

20% (1999)

48% (1999)

29% (1996)

44% (1989)

24% (1995)

52% (2002)

31% (1994)

30% (1994)

40% (1999)

38% (2001)

35% (1992)

40% (2002)

37% (1995)