Year	% (modeled ILO estimate)
1991	21.865
1992	21.593
1993	21.392
1994	21.106
1995	20.54
1996	21.174
1997	21.823
1998	22.486
1999	23.162
2000	23.853
2001	24.558
2002	25.277
2003	26.01
2004	25.173
2005	24.353
2006	23.552
2007	22.77
2008	22.006
2009	21.26
2010	20.533
2011	19.825
2012	19.135
2013	18.464
2014	17.811
2015	17.177
2016	16.56
2017	16.71
2018	16.696
2019	16.701
2020	15.458
2021	15.786
2022	15.586
2023	15.685