57% (1991)

10% (1999)

0% (1997)

63% (1989)

25% (1999)

50% (1999)

35% (1996)

60% (1999)

0% (1975)

0% (1982)

46% (1999)

80% (1988)

0% (1980)

0% (1975)

0% (1990)

35% (2006)

0% (1979)

60% (1991)

0% (1987)

55% (1980)