69% (2017)

64% (2002)

68% (1995)

54% (1993)

61% (1977)

64% (1985)

62% (2014)

69% (1986)

71% (1976)

63% (1990)

70% (1957)

73% (1999)

65% (2002)

57% (2003)

71% (1983)

67% (2004)

74% (2019)

59% (1996)

63% (1989)

65% (2022)