Year	% of total employment (modeled ILO estimate)
1991	3.471611749371
1992	3.50327988882746
1993	3.53669319186561
1994	3.56966115510014
1995	3.60862854886759
1996	3.649845984676
1997	3.68984476965372
1998	3.71354966016224
1999	3.75911372029164
2000	3.85283521356198
2001	3.61880017321209
2002	4.14837244511734
2003	4.47331206630052
2004	4.42994000774956
2005	4.51097856550228
2006	4.43388245626497
2007	4.94275025507312
2008	4.46064085596585
2009	4.48674962124035
2010	4.51527385196439
2011	4.46652005763252
2012	4.46073275118406
2013	4.46961264763754
2014	4.45762618221269
2015	4.46552992180847
2016	4.45702644667535
2017	4.44137103192725
2018	4.42422558688707
2019	4.45139594901071
2020	4.46033509385889
2021	4.39608387573698
2022	4.09310322026053