Year	% of total employment (modeled ILO estimate)
1991	3.0335364991507
1992	3.10931455547838
1993	3.21713534494753
1994	3.36411094956268
1995	3.51933167760032
1996	3.76124775381536
1997	4.02965904616833
1998	4.22304931685967
1999	4.49559565026115
2000	4.72198637945904
2001	5.00127198702473
2002	5.32929773747646
2003	5.59813196887961
2004	5.91871629001724
2005	6.24902851834547
2006	6.64566785641066
2007	7.02287067446933
2008	7.36607322831004
2009	7.89399072997124
2010	8.31545268923535
2011	8.57507143199195
2012	8.82296780804265
2013	9.04369283737174
2014	9.15471909872488
2015	9.35264042354074
2016	9.53609908643763
2017	9.73555092400423
2018	9.11429325756528
2019	8.5077681234142
2020	8.05220323308107
2021	7.74176318696469
2022	7.17839436403818