77% (2009)

63% (1987)

58% (1999)

69% (1986)

66% (2007)

0% (2011)

60% (2014)

78% (2014)

70% (1970)

76% (2014)

75% (1947)

78% (2015)

68% (2005)

55% (2012)

0% (1970)

59% (2013)

60% (2017)

70% (1969)

69% (2010)

69% (2008)