Year	% (modeled ILO estimate)
1991	41.055
1992	40.633
1993	40.163
1994	39.664
1995	39.185
1996	38.707
1997	38.216
1998	37.723
1999	37.229
2000	36.738
2001	36.258
2002	35.793
2003	33.566
2004	34.547
2005	32.78
2006	31.544
2007	31.416
2008	29.9
2009	29.982
2010	30.779
2011	26.94
2012	25.369
2013	24.856
2014	28.564
2015	28.008
2016	32.376
2017	30.243
2018	28.902
2019	27.352
2020	25.404
2021	27.351
2022	29.883
2023	24.174