Year	% (modeled ILO estimate)
1991	49.306
1992	48.812
1993	48.88
1994	50.05
1995	51.22
1996	52.062
1997	51.641
1998	51.22
1999	51.15
2000	51.683
2001	50.661
2002	49.648
2003	51.041
2004	52.433
2005	53.823
2006	54.441
2007	53.74
2008	52.13
2009	50.448
2010	46.43
2011	44.9
2012	45.265
2013	45.249
2014	44.288
2015	43.597
2016	41.538
2017	40.565
2018	39.598
2019	38.639
2020	34.766
2021	36.574
2022	36.459
2023	36.576