74% (1991)

73% (2016)

72% (2000)

71% (1997)

66% (1993)

53% (2013)

76% (1976)

58% (2000)

76% (2021)

60% (1987)

57% (2012)

65% (2017)

70% (1996)

65% (2016)

59% (2007)

50% (1987)

76% (2010)

77% (2008)

86% (2002)

73% (2020)