Year	% (modeled ILO estimate)
1991	42.09515601513546
1992	42.714978908161186
1993	40.75270328011386
1994	40.93474757910176
1995	40.31401185604201
1996	39.09631800632026
1997	37.31218749965841
1998	36.15439655251336
1999	37.123691943539335
2000	36.044423451182524
2001	35.18611095710154
2002	34.827357495888776
2003	33.569116429921294
2004	33.02263673238939
2005	32.796260255112486
2006	32.34202958840861
2007	32.03474426448207
2008	32.4307280499345
2009	32.80317759980965
2010	32.41454728687877
2011	32.0178069354141
2012	31.02125675289073
2013	31.142967473383003
2014	30.905077139157193
2015	31.08014938591149
2016	31.05863086505712
2017	30.82781214873993
2018	30.593932177598333
2019	30.687374206570528
2020	28.50970498393551
2021	28.81358469636244
2022	28.51617527447186
2023	28.314869525335446