Year	% of total labor force (modeled ILO estimate)
1991	2.9507600199552395
1992	3.0394030171609665
1993	3.3042097140254647
1994	3.4953649025109232
1995	3.577896042140221
1996	3.7380490745148416
1997	3.726584318557712
1998	3.8718891086421
1999	3.8595761740168006
2000	3.732667634391402
2001	3.6055138688170767
2002	3.401533105599024
2003	3.2535568352492286
2004	3.091207272518714
2005	3.0126158464793185
2006	2.903556705591371
2007	2.7421282052522877
2008	2.7793695360357584
2009	2.84135479224355
2010	2.9023515331066174
2011	2.931926641217682
2012	3.9608173284346577
2013	3.6787148346433227
2014	3.329797754197198
2015	4.0653188905780375
2016	3.735698670151582
2017	4.339480887095958
2018	4.818347320094684
2019	5.2026019543689435
2020	6.0372207465576455
2021	6.035065082657342
2022	5.148425013637858
2023	4.810369995636399