55% (1945)

54% (1974)

50% (2023)

52% (2018)

52% (1939)

53% (1994)

90% (1952)

80% (1963)

64% (1949)

61% (1949)

65% (1978)

56% (2002)

57% (2015)

71% (1988)

78% (2011)

0% (2010)

55% (2005)

60% (2008)

70% (1983)

69% (1977)