Year	% (modeled ILO estimate)
1991	43.163
1992	41.809
1993	40.694
1994	39.089
1995	35.675
1996	33.629
1997	34.368
1998	34.987
1999	35.916
2000	35.866
2001	36.665
2002	35.827
2003	34.51
2004	33.968
2005	33.596
2006	33.942
2007	35.3
2008	36.352
2009	37.316
2010	35.969
2011	37.839
2012	37.847
2013	39.427
2014	39.921
2015	40.736
2016	41.741
2017	42.609
2018	43.19
2019	45.667
2020	45.439
2021	45.58
2022	45.352
2023	45.673