75% (2015)

80% (2006)

75% (1990)

88% (1987)

78% (2011)

75% (2013)

64% (2016)

47% (2018)

78% (1994)

73% (2014)

73% (2012)

79% (2000)

57% (2014)

50% (2008)

67% (1987)

70% (2012)

74% (2007)

80% (2004)

76% (2011)

79% (1999)