51% (1973)

52% (1980)

57% (1977)

51% (1978)

55% (2014)

52% (1976)

75% (1973)

53% (1995)

46% (1977)

59% (1980)

48% (1977)

59% (1977)

56% (1980)

46% (1976)

59% (1975)

59% (1976)

48% (1977)

37% (1983)

61% (2023)

45% (1978)