Year	% (modeled ILO estimate)
1991	39.642
1992	40.538
1993	41.225
1994	42.234
1995	43.073
1996	42.832
1997	41.939
1998	41.236
1999	40.92
2000	41.199
2001	41.479
2002	41.759
2003	42.04
2004	42.321
2005	42.603
2006	42.885
2007	43.168
2008	43.451
2009	43.734
2010	44.018
2011	44.303
2012	44.588
2013	44.873
2014	45.158
2015	45.444
2016	45.73
2017	47.73
2018	44.39
2019	44.56
2020	43.29
2021	42.2
2022	40.552
2023	40.638