Year	% (modeled ILO estimate)
1991	19.157
1992	18.51
1993	17.606
1994	17.233
1995	16.81
1996	15.797
1997	14.777
1998	14.064
1999	13.391
2000	12.757
2001	12.235
2002	11.878
2003	11.596
2004	11.345
2005	11.041
2006	10.748
2007	10.423
2008	10.622
2009	10.828
2010	11.147
2011	11.521
2012	11.909
2013	12.165
2014	12.416
2015	12.646
2016	12.76
2017	12.584
2018	12.418
2019	12.279
2020	10.561
2021	11.094
2022	12.152
2023	12.337