78% (1989)

74% (2011)

73% (1984)

57% (2001)

77% (2013)

76% (1981)

62% (1977)

54% (2017)

75% (1985)

56% (1973)

71% (1975)

72% (2009)

64% (2012)

54% (2011)

59% (1974)

70% (1994)

49% (2019)

70% (1983)

58% (1985)

30% (2012)