70% (1988)

0% (1984)

0% (1993)

0% (1979)

42% (2002)

0% (1979)

0% (1996)

70% (1987)

0% (1984)

80% (1986)

0% (1989)

30% (1986)

80% (1985)

50% (1988)

70% (1996)

0% (1982)

0% (1993)

0% (1975)

90% (1990)

0% (1997)