Year	% (modeled ILO estimate)
1991	33.926
1992	35.18
1993	35.275
1994	35.175
1995	35.591
1996	35.531
1997	36.277
1998	36.789
1999	38.757
2000	40.029
2001	38.965
2002	39.25
2003	39.516
2004	40.588
2005	41.348
2006	41.549
2007	42.604
2008	43.346
2009	43.139
2010	43.651
2011	43.658
2012	43.61
2013	43.861
2014	44.261
2015	44.275
2016	44.159
2017	45.297
2018	46.776
2019	47.379
2020	46.695
2021	47.112
2022	48.159
2023	48.101