71% (1960)

39% (1981)

58% (2020)

65% (2013)

56% (2013)

63% (1986)

51% (1981)

53% (1973)

74% (1985)

49% (1988)

66% (2019)

56% (1998)

50% (2017)

59% (1967)

54% (1975)

57% (2007)

52% (1975)

72% (2021)

45% (2004)

56% (1966)