72% (2020)

65% (2016)

71% (2011)

67% (2009)

68% (1993)

66% (1993)

65% (1949)

66% (1985)

61% (1996)

71% (1988)

69% (1988)

64% (1995)

64% (1996)

65% (2004)

65% (2024)

64% (2021)

62% (2014)

80% (2013)

58% (2010)

67% (1982)