10% (1947)

65% (2006)

55% (2012)

49% (2010)

54% (2012)

67% (2007)

56% (2011)

76% (2013)

48% (2013)

67% (2013)

61% (2013)

47% (2016)

74% (2013)

0% (1970)

60% (2013)

40% (1991)

52% (2015)

50% (1955)

57% (2014)

65% (2004)