58% (2015)

67% (2004)

71% (1981)

49% (1954)

62% (1976)

75% (1998)

41% (2006)

69% (2010)

42% (2005)

80% (1984)

63% (1961)

37% (1979)

58% (2018)

58% (1999)

60% (2012)

49% (2015)

66% (1977)

58% (2007)

44% (1988)

0% (1996)