43% (1977)

59% (1975)

46% (1974)

45% (1978)

54% (1973)

64% (1977)

46% (1979)

44% (1972)

67% (1975)

37% (1973)

54% (1976)

47% (1976)

0% (2015)

40% (1976)

40% (1974)

60% (1965)