68% (1984)

69% (2012)

63% (2005)

64% (2006)

57% (2013)

74% (2001)

57% (2014)

60% (1991)

67% (2019)

64% (2013)

64% (2013)

69% (2008)

65% (2007)

61% (2002)

65% (2015)

62% (2018)

70% (2011)

66% (2013)

64% (2009)

55% (1992)