77% (2018)

57% (2016)

63% (2019)

73% (2013)

71% (1992)

66% (2011)

64% (1998)

61% (2014)

61% (1999)

72% (2009)

54% (2003)

62% (2006)

55% (2002)

70% (2015)

69% (2011)

61% (2007)

59% (2012)

60% (2003)

67% (2016)

72% (2008)