61% (1973)

63% (1973)

50% (1972)

64% (1978)

59% (1975)

50% (1974)

58% (1979)

64% (1975)

50% (1976)

45% (1974)

71% (1975)

37% (1977)

60% (1973)

52% (2009)

0% (2010)