62% (1923)

63% (1995)

55% (1992)

64% (1995)

70% (1988)

60% (1994)

57% (1950)

57% (1989)

65% (1929)

60% (1994)

60% (1991)

62% (1991)

66% (1985)

62% (1994)

64% (1994)

69% (1985)

50% (1983)

45% (1984)

59% (1995)

59% (1989)