72% (2018)

54% (2012)

60% (2011)

57% (2015)

43% (2009)

45% (2013)

57% (2009)

77% (2016)

68% (2018)

64% (2012)

52% (2004)

58% (2017)

48% (2001)

62% (2002)

36% (2015)

54% (2017)

74% (2015)

36% (2014)

69% (1977)

69% (2013)