Year	% (modeled ILO estimate)
1991	19.22
1992	19.41
1993	19.266
1994	20.761
1995	21.912
1996	22.453
1997	22.227
1998	21.976
1999	21.817
2000	21.641
2001	20.709
2002	20.077
2003	20.511
2004	19.984
2005	19.474
2006	19.818
2007	20.016
2008	20.12
2009	19.865
2010	20.295
2011	20.164
2012	20.817
2013	20.664
2014	21.197
2015	20.222
2016	18.824
2017	18.839
2018	16.124
2019	16.151
2020	14.289
2021	13.387
2022	14.989
2023	15.176