Year % of total employment (modeled ILO estimate) 1991 19.765487584531687 1992 20.039942521594803 1993 20.67483133653789 1994 20.969109053524836 1995 21.330995331540564 1996 21.807762917949585 1997 22.025330230909535 1998 21.676392274118854 1999 21.33163009013702 2000 20.98781340668461 2001 21.023382477901894 2002 20.40013489768958 2003 20.520782964035273 2004 21.260813007101245 2005 22.37613888521596 2006 23.479854348864826 2007 24.660530725208837 2008 24.926868086489193 2009 25.324759717406494 2010 25.98754507202592 2011 26.602340246337498 2012 27.27424564872364 2013 27.18839542765981 2014 27.213034065836734 2015 26.935957095746975 2016 27.31032168045695 2017 27.658841618954963 2018 28.08557609907107 2019 28.474329143399935 2020 28.882612169944732 2021 29.440330965027517 2022 29.298533617165972