Year	% of total labor force (modeled ILO estimate)
1991	4.682492954141022
1992	4.756050480986697
1993	4.762678728690042
1994	4.743792291151333
1995	4.649785397419001
1996	4.6869974542909185
1997	4.718234468945133
1998	4.831943411698952
1999	4.9525956055658655
2000	5.0261858000760675
2001	5.020057839933046
2002	4.984620372755683
2003	4.924139153074081
2004	4.772434760163543
2005	4.611191240848523
2006	4.611209731684543
2007	4.6467463249324465
2008	4.767681468203002
2009	4.677523878135006
2010	4.826877240331126
2011	4.869966178686319
2012	4.96968549124601
2013	4.822861904444195
2014	4.791458118287665
2015	4.897413841268238
2016	4.995689466104507
2017	5.089209585653196
2018	5.01295803880824
2019	5.008268793098275
2020	5.708067888937607
2021	5.654376817189713
2022	5.149262663431293
2023	5.31143248284265
