Year	% (modeled ILO estimate)
1991	26.63672631895556
1992	26.579269791482364
1993	26.087202356785063
1994	26.09919798117505
1995	25.637650956949287
1996	25.62811430280071
1997	25.471359804691783
1998	25.40487995561165
1999	25.29312555919976
2000	24.834604006525183
2001	24.496465351481064
2002	24.344008562024605
2003	24.094001923557016
2004	23.805000209886988
2005	23.52619931953375
2006	23.389656894756545
2007	23.12403406367521
2008	22.699346429924322
2009	22.332306276012474
2010	21.99988147728777
2011	21.63284693727411
2012	21.393332879903983
2013	21.07575303472126
2014	20.742772665368612
2015	20.48348222934648
2016	20.21150856291628
2017	19.916141447863303
2018	19.353220565505744
2019	19.463562937443132
2020	18.226540452423745
2021	18.741717103491084
2022	19.40870415159579
2023	20.528058755479993