Year	% (modeled ILO estimate)
1991	41.664
1992	40.821
1993	38.665
1994	37.974
1995	38.593
1996	39.092
1997	40.214
1998	41.515
1999	43.598
2000	45.44
2001	46.553
2002	47.541
2003	48.511
2004	49.448
2005	51.579
2006	52.786
2007	53.477
2008	52.417
2009	48.611
2010	47.518
2011	46.654
2012	44.666
2013	43.614
2014	44.261
2015	45.563
2016	46.785
2017	47.866
2018	48.776
2019	49.406
2020	47.577
2021	48.931
2022	50.082
2023	50.602