Year	% (modeled ILO estimate)
1991	24.242
1992	24.155
1993	23.731
1994	23.186
1995	20.606
1996	18.464
1997	16.382
1998	16.924
1999	17.498
2000	18.044
2001	17.663
2002	17.395
2003	17.105
2004	17.186
2005	17.178
2006	17.355
2007	17.189
2008	17.264
2009	17.073
2010	17.141
2011	18.805
2012	20.526
2013	20.407
2014	20.034
2015	20.385
2016	20.44
2017	19.189
2018	18.124
2019	18.036
2020	16.271
2021	16.637
2022	16.91
2023	17.322