Year	% (modeled ILO estimate)
1991	31.995612030350124
1992	33.278641184500685
1993	34.68527402238698
1994	36.208711409574825
1995	37.79070548561755
1996	39.44181005283836
1997	39.66096142822045
1998	39.87022449512654
1999	40.04955154467943
2000	40.187996100821614
2001	40.29092232737862
2002	40.36254711143613
2003	40.39937905729607
2004	40.41659001825412
2005	40.41051228985342
2006	40.38333309688312
2007	40.3456986348026
2008	40.31511710432931
2009	40.3004572175049
2010	40.20740109382769
2011	40.1424874150337
2012	40.48634994933855
2013	40.71370292437841
2014	40.98033300291629
2015	41.20419753798254
2016	41.41082558459024
2017	41.66606186405005
2018	41.890435694315
2019	42.01418274141302
2020	41.93908748824083
2021	42.17961654894046
2022	41.59496205580626
2023	41.08845944073468