53% (1996)

80% (1972)

86% (1967)

53% (1992)

60% (1975)

61% (1992)

50% (1988)

50% (1986)

0% (1975)

0% (1980)

0% (1974)

90% (1987)

0% (1977)

0% (1983)

80% (1982)

10% (1988)

0% (1991)

0% (1984)

0% (1991)

40% (2009)