Year % of total employment (modeled ILO estimate) 1991 3.93958314672977 1992 3.92630733448205 1993 3.8628501987091 1994 3.78337500645749 1995 3.70604162969571 1996 3.62480972553434 1997 3.54396430616608 1998 3.43366310242866 1999 3.3702243722942 2000 3.25933244923637 2001 3.08485501782472 2002 2.92089546898141 2003 2.66537770791962 2004 2.23897731846225 2005 2.09029329833782 2006 1.82597301635069 2007 1.58871901959224 2008 1.49933272253067 2009 1.28236162098426 2010 1.28830552669354 2011 1.32378871177001 2012 1.26553790788828 2013 1.73026308319141 2014 2.17827100818632 2015 2.55404347870275 2016 2.98682012853834 2017 3.43382039452278 2018 3.83709835362522 2019 4.46539998226624 2020 4.82182282730896 2021 4.70685230926648 2022 4.57434255563659