Year	% (modeled ILO estimate)
1991	38.378
1992	39.114
1993	38.637
1994	39.606
1995	40.24
1996	39.726
1997	40.946
1998	43.2
1999	41.822
2000	41.222
2001	41.104
2002	39.221
2003	39.088
2004	40.977
2005	42.307
2006	44.338
2007	46.713
2008	48.53
2009	49.439
2010	49.752
2011	52.287
2012	51.843
2013	50.821
2014	52.18
2015	51.341
2016	51.05
2017	50.773
2018	50.335
2019	50.33
2020	47.694
2021	50.006
2022	50.657
2023	50.519