40% (2002)

48% (1999)

43% (1999)

30% (1996)

28% (1997)

20% (1996)

55% (2000)

0% (2008)

39% (1995)

24% (1996)

35% (1985)

17% (1996)

68% (1996)

30% (1999)

25% (1998)

46% (1997)

37% (1997)

41% (1985)

10% (1998)

10% (1997)