65% (2020)

73% (2000)

75% (2009)

71% (1987)

73% (1990)

78% (2012)

72% (1977)

74% (1973)

73% (1970)

75% (1986)

75% (1996)

70% (2005)

70% (1983)

72% (1977)

71% (1992)

62% (2017)

69% (1967)

72% (1972)

69% (2024)

67% (1974)