69% (2008)

55% (2020)

68% (1985)

72% (1982)

58% (1976)

47% (1973)

59% (1985)

77% (1992)

37% (1971)

45% (1978)

65% (1989)

56% (2018)

58% (1984)

49% (1970)

55% (1980)

50% (1954)

69% (2015)

0% (2014)

72% (2018)

67% (2012)