71% (1975)

67% (1965)

40% (1972)

64% (1966)

77% (1980)

50% (1992)

55% (1971)

58% (1977)

80% (1963)

0% (1969)

34% (1987)

0% (1979)

40% (1975)

0% (1962)

60% (1973)

32% (1972)

52% (1973)

29% (1988)

0% (2001)

74% (1969)