70% (2006)

77% (1987)

60% (2011)

58% (2011)

43% (2013)

72% (2003)

70% (2014)

58% (2014)

58% (2015)

67% (2013)

70% (2007)

30% (2010)

60% (2005)

60% (2012)

34% (2015)

70% (2007)

77% (1986)

40% (2014)

0% (2014)

24% (2015)