76% (1997)

70% (1995)

74% (1977)

60% (2019)

64% (2002)

58% (2011)

58% (2013)

76% (1999)

72% (2003)

68% (2004)

53% (1994)

58% (2000)

64% (2008)

62% (1991)

64% (2010)

74% (2021)

64% (2005)

73% (2004)

62% (1980)

65% (1999)