Year	% of total labor force (modeled ILO estimate)
1991	2.4068299733775724
1992	2.3745699607637087
1993	2.6270338556501476
1994	2.925491234027437
1995	3.0091699754002548
1996	3.1150028603157773
1997	3.2077431531863274
1998	3.3736408288294424
1999	3.4639488279217705
2000	3.419796425578925
2001	3.8509456843411205
2002	4.171696924380288
2003	4.424311650874218
2004	4.417769762260178
2005	4.4962216810346405
2006	4.389251449326308
2007	4.368583431503251
2008	4.4542700532809825
2009	4.439596475737754
2010	4.1762531247422245
2011	4.125650519872319
2012	4.063777887768746
2013	4.0646887505460585
2014	4.0617329395738455
2015	4.13748670573712
2016	4.0534053880313525
2017	3.9319326886643466
2018	3.8227222566522956
2019	3.913821349346954
2020	4.387127362437038
2021	4.142495787768356
2022	4.2578627099005
2023	4.014450969794988