Year	% (modeled ILO estimate)
1991	46.24461275439089
1992	46.46489685674459
1993	45.067434603106854
1994	44.18346595044639
1995	42.66166180218517
1996	41.09038456618155
1997	38.83226496059344
1998	36.863509802313565
1999	38.161870619530916
2000	37.76789811668088
2001	36.91218443941213
2002	36.07638667227057
2003	35.05117051064201
2004	35.35108574907133
2005	35.67595348681744
2006	35.65254772873749
2007	36.33134194929903
2008	37.695166724109114
2009	36.08720767090939
2010	36.329388438350996
2011	37.22320521380273
2012	36.59017218868481
2013	36.82747011937637
2014	36.89375058938404
2015	36.8238160307113
2016	36.99003575900021
2017	36.96922202931282
2018	37.0826714951327
2019	36.496257594190716
2020	34.14580912912572
2021	34.68014966089881
2022	35.901621294733296
2023	35.84965459025026