Year	% (modeled ILO estimate)
1991	56.266
1992	51.99
1993	49.873
1994	47.711
1995	42.334
1996	42.452
1997	39.064
1998	36.85
1999	35.563
2000	37.507
2001	36.668
2002	38.021
2003	30.898
2004	29.428
2005	31.927
2006	31.52
2007	31.114
2008	30.708
2009	34.752
2010	26.642
2011	26.223
2012	28.691
2013	29.644
2014	29.356
2015	35.981
2016	30.262
2017	32.383
2018	33.793
2019	37.578
2020	33.494
2021	35.996
2022	31.735
2023	37.021