51% (1953)

56% (1954)

59% (1987)

59% (2013)

57% (1952)

60% (2020)

35% (1953)

54% (1967)

77% (1972)

59% (1966)

48% (1957)

51% (2002)

66% (1969)

54% (1972)

66% (1958)

63% (1964)

56% (1972)

77% (1997)

48% (1948)

52% (1965)