62% (2013)

49% (2012)

69% (2004)

69% (2011)

67% (2013)

60% (2007)

61% (2016)

65% (2008)

45% (2015)

67% (2010)

58% (2015)

52% (2013)

68% (2016)

52% (2014)

57% (2012)

49% (2016)

49% (2009)

68% (2002)

54% (2014)

0% (1985)