43% (1999)

68% (1996)

40% (2002)

55% (2000)

46% (1997)

39% (1995)

37% (1997)

10% (1996)

24% (1997)

30% (1996)

29% (2000)

10% (1998)

58% (1997)

25% (1998)

55% (1986)

41% (1985)

28% (1997)

48% (1999)

10% (1998)

35% (1985)