80% (1972)

53% (1996)

60% (1975)

61% (1992)

86% (1967)

0% (1987)

0% (1983)

0% (1980)

53% (1992)

50% (1988)

0% (1996)

100% (1995)

10% (1988)

55% (1977)

50% (1986)

70% (1994)

59% (1978)

0% (1980)

0% (1973)

10% (1995)