Year	% (modeled ILO estimate)
1991	45.233
1992	44.789
1993	44.344
1994	43.899
1995	43.455
1996	43.012
1997	42.569
1998	42.127
1999	41.687
2000	41.247
2001	40.81
2002	40.373
2003	38.433
2004	40.037
2005	38.152
2006	35.917
2007	36.612
2008	36.641
2009	36.289
2010	35.849
2011	32.458
2012	30.087
2013	29.866
2014	33.626
2015	33.183
2016	37.233
2017	35.671
2018	33.48
2019	33.186
2020	32.45
2021	32.941
2022	34.977
2023	30.487