40% (1979)

40% (1979)

54% (1978)

50% (1983)

71% (1975)

0% (1970)

0% (1990)

0% (1986)

55% (1975)

50% (1965)

43% (1980)

0% (1989)

60% (1975)

0% (1976)

50% (1978)

0% (1975)

60% (1970)

59% (1988)

60% (1991)

60% (1961)