20% (1980)

0% (1978)

0% (1971)

0% (1972)

60% (1991)

60% (1974)

80% (1986)

80% (1966)

50% (1983)

80% (1977)

0% (1988)

0% (1982)

48% (1983)

50% (1959)

58% (1974)

44% (1988)

72% (1983)

42% (1987)

80% (1966)

45% (1972)