Year	% (modeled ILO estimate)
1991	43.33413155992671
1992	42.74082569615594
1993	42.0002372387843
1994	41.53327084012979
1995	40.90456753964222
1996	40.926050066543084
1997	41.05018338581402
1998	40.40630000959741
1999	40.661081815086476
2000	39.26408337740008
2001	38.13076606031146
2002	37.74702610416283
2003	37.910586681015126
2004	39.311121005117684
2005	38.86508991546018
2006	39.03403417506275
2007	39.04809064010624
2008	39.10142005231689
2009	38.94331520501551
2010	38.48171835012595
2011	36.88693419603425
2012	35.76194168075891
2013	35.45022323897215
2014	34.825276470614874
2015	31.98807711132478
2016	31.7287149434276
2017	30.980716970245947
2018	31.45728821974132
2019	31.40023220549907
2020	29.20546433756505
2021	30.01779854616543
2022	30.903025479935025
2023	31.267639502119827