68% (1981)

81% (1989)

74% (1999)

66% (2018)

70% (2015)

71% (2010)

44% (1999)

87% (2013)

68% (1984)

71% (1993)

70% (2013)

58% (2006)

61% (1954)

77% (1960)

77% (2016)

37% (1980)

0% (1998)

60% (2000)

65% (2013)

77% (2020)