Year	% of total employment (modeled ILO estimate)
1991	3.966224971938669
1992	3.9677473275182638
1993	4.074343989962267
1994	4.170112583435916
1995	3.865831773026082
1996	3.74169281367554
1997	3.6951229259552343
1998	3.410570934303533
1999	3.3672045177914884
2000	3.3039876754834254
2001	3.340794000735406
2002	3.3350380971993117
2003	3.4264796425070037
2004	3.5110235520969177
2005	3.534045802520056
2006	3.4886533463139666
2007	3.449107202238692
2008	3.425533123399977
2009	3.4293246944696807
2010	3.3974887311502746
2011	3.3753313029451184
2012	3.3774148734109697
2013	3.3710473643944576
2014	3.94724316482029
2015	3.879666076626363
2016	3.8678919502993128
2017	3.7971716933892936
2018	3.724519060900831
2019	3.607852621308439
2020	3.69880181097056
2021	3.9643918916920846
2022	3.834930635800672