59% (1980)

60% (1979)

20% (1993)

62% (1982)

65% (1990)

0% (1971)

57% (1992)

0% (1988)

50% (1970)

55% (1978)

42% (1975)

67% (1981)

60% (1972)

43% (1979)

0% (1988)

0% (1971)

0% (1982)

0% (1977)

0% (1981)

15% (1974)