76% (1976)

0% (2025)

61% (2012)

58% (2020)

56% (1990)

51% (1995)

66% (1999)

69% (1994)

64% (1978)

61% (2006)

67% (2018)

67% (1990)

65% (2004)

62% (2018)

62% (2009)

65% (1980)

47% (2015)

59% (2010)

68% (1945)

74% (1985)