78% (1992)

52% (2013)

74% (2002)

76% (2015)

70% (1994)

71% (2001)

62% (1980)

73% (1973)

77% (2021)

72% (2003)

58% (2001)

64% (2008)

70% (2018)

70% (2019)

67% (1999)

63% (2018)

67% (1998)

62% (1994)

60% (2015)

63% (2021)