76% (2019)

73% (1966)

61% (2016)

66% (1996)

66% (1992)

67% (1950)

61% (2010)

62% (2009)

70% (1974)

53% (2008)

67% (2006)

53% (2001)

66% (1993)

75% (1971)

76% (1992)

62% (2005)

78% (1982)

56% (2004)

66% (1985)

70% (1967)