82% (1998)

80% (2007)

74% (2010)

81% (2014)

71% (1991)

73% (1995)

70% (1993)

65% (2018)

62% (2012)

76% (2015)

74% (2011)

65% (2004)

72% (2019)

72% (1999)

69% (2016)

76% (2013)

73% (2017)

73% (1999)

71% (2003)

63% (2001)