69% (2014)

56% (1980)

68% (1979)

59% (1978)

60% (1977)

42% (1975)

59% (1979)

80% (1965)

42% (1981)

71% (1987)

50% (1975)

42% (1983)

56% (2015)

48% (1973)

50% (1976)

68% (1988)

61% (1979)

64% (1980)

47% (1980)

68% (1981)