50% (1982)

61% (2015)

60% (2013)

56% (2018)

50% (1987)

58% (2019)

59% (1999)

65% (2008)

56% (1981)

75% (1963)

58% (1981)

70% (2018)

40% (1980)

66% (1995)

58% (1963)

64% (1973)

71% (1960)

65% (1970)

60% (2015)

49% (1970)