74% (1973)

65% (1976)

66% (1990)

40% (2011)

57% (2020)

61% (1976)

50% (1959)

57% (1974)

60% (1963)

73% (1954)

55% (1974)

47% (1995)

61% (1955)

68% (1962)

65% (1957)

73% (1962)

50% (1993)

52% (1988)

54% (1974)

58% (1970)