52% (1996)

80% (1972)

86% (1967)

50% (1986)

60% (1975)

50% (1988)

60% (1992)

0% (1975)

0% (1980)

0% (1977)

0% (1983)

0% (1974)

90% (1987)

0% (1979)

55% (1977)

70% (1994)

80% (1982)

10% (1988)

0% (1985)

0% (1984)