53% (1991)

80% (1988)

65% (1995)

0% (1975)

60% (1999)

5% (1975)

0% (1977)

10% (1984)

0% (1992)

100% (1987)

30% (1995)

50% (1999)

10% (1999)

0% (1992)

35% (1999)

57% (1982)

40% (1982)

57% (1991)

25% (1973)

0% (1975)