Year	% (modeled ILO estimate)
1991	43.398
1992	42.673
1993	41.349
1994	40.104
1995	39.256
1996	38.058
1997	37.307
1998	36.745
1999	35.961
2000	34.756
2001	33.975
2002	32.875
2003	31.571
2004	30.263
2005	29.016
2006	27.133
2007	25.366
2008	23.717
2009	22.193
2010	20.886
2011	20.231
2012	19.701
2013	19.266
2014	18.847
2015	18.39
2016	18.139
2017	17.735
2018	17.289
2019	16.894
2020	16.257
2021	16.396
2022	16.853
2023	16.741