Year	% of total employment (modeled ILO estimate)
1991	4.740113809847062
1992	4.605998182444181
1993	4.6124653971360665
1994	4.245885343876875
1995	4.098281020058067
1996	4.181538941038477
1997	3.923267343509681
1998	3.5912680828886585
1999	3.4675566265490234
2000	3.3330302735616884
2001	3.224917248901106
2002	3.21596343380208
2003	3.1334993003321228
2004	3.062696479400801
2005	3.006894982838335
2006	2.9364148152689715
2007	2.854519416902301
2008	2.7981876346520247
2009	2.8334111165636413
2010	2.7979085052708634
2011	2.758575250307463
2012	2.7388047604593933
2013	2.732635404924468
2014	2.582760233111513
2015	2.799199813685848
2016	2.7808542750516367
2017	2.7618670088218003
2018	2.7883845939613114
2019	2.480738028620986
2020	2.1781128611449145
2021	1.8319185648751701
2022	1.7660449548992958
