Year % of total employment (modeled ILO estimate) 1991 19.380631603339108 1992 19.361894015609476 1993 19.513437740354984 1994 19.53612062792776 1995 19.553742922759643 1996 19.725417534027486 1997 19.764243910003405 1998 19.585409244471784 1999 19.425404487059733 2000 19.290353994128115 2001 19.358649585478357 2002 19.131483972622647 2003 19.271086151140047 2004 19.733467813596665 2005 20.323775472536365 2006 20.93973675644131 2007 21.66468195039032 2008 21.866484735561446 2009 22.08924516698744 2010 22.580417333625704 2011 23.01708143498032 2012 23.55745662446763 2013 23.55688044417215 2014 23.61661357294442 2015 23.47709457618111 2016 23.55596067044977 2017 23.683269176277975 2018 23.848165773073696 2019 23.922981732721574 2020 23.782660672173222 2021 24.221395360844706 2022 24.445924269301432