50% (1973)

56% (1977)

50% (1978)

54% (2014)

59% (1976)

75% (1973)

52% (1980)

47% (1976)

52% (1995)

52% (1976)

58% (1980)

56% (1980)

46% (1977)

69% (1974)

47% (1977)

58% (1975)

59% (1977)

56% (1975)

37% (1983)

51% (1974)