50% (1987)

49% (1989)

72% (1980)

58% (2007)

58% (1980)

57% (2017)

65% (1990)

59% (2012)

65% (2001)

50% (1986)

63% (1985)

56% (2013)

55% (1989)

63% (1986)

68% (2020)

41% (1972)

69% (1995)

70% (2012)

60% (1965)

63% (2017)