Year % of total employment (modeled ILO estimate) 1991 14.621398578865051 1992 14.661380444034585 1993 14.70697506389232 1994 14.777865718629792 1995 14.846946679492497 1996 14.940342228050872 1997 15.097804574295672 1998 15.221946910307022 1999 15.433034084742992 2000 15.707770804916047 2001 15.901574390148399 2002 16.03208423234849 2003 16.211796366388967 2004 16.40724900501497 2005 16.607365262349557 2006 16.79255601095826 2007 17.046823395130183 2008 17.394194356330637 2009 17.668144413886946 2010 18.03113154020623 2011 18.36210822122849 2012 18.564586999773976 2013 18.53807559534846 2014 18.377014260884316 2015 18.281947717784057 2016 18.17433512429792 2017 17.70121520019255 2018 17.66988594261864 2019 17.57184468460883 2020 17.282398382038938 2021 17.37495615612081 2022 17.56478896256232