67% (1989)

68% (1974)

57% (1969)

65% (1989)

80% (1981)

63% (1990)

70% (1986)

73% (1983)

50% (1975)

70% (1975)

0% (1975)

0% (1973)

40% (1978)

0% (1994)

0% (1974)

69% (1980)

80% (1986)

0% (1974)

80% (1980)

0% (1979)