59% (2015)

57% (2004)

50% (2000)

65% (2015)

61% (2020)

49% (2016)

57% (2005)

65% (2000)

70% (2004)

67% (2014)

58% (2001)

70% (1998)

72% (1988)

49% (2015)

69% (2008)

55% (2014)

64% (1995)

59% (2010)

61% (2015)

52% (2012)