25% (1995)

25% (1984)

0% (1999)

10% (1997)

32% (1994)

36% (1997)

44% (1997)

0% (1995)

30% (1999)

35% (1996)

30% (1997)

0% (1997)

63% (1999)

45% (1992)

20% (1989)

43% (1997)

10% (1994)

30% (1995)

30% (1997)

50% (1990)