Year	% (modeled ILO estimate)
1991	28.735
1992	28.544
1993	28.228
1994	28.078
1995	27.887
1996	27.476
1997	26.921
1998	26.347
1999	25.806
2000	25.225
2001	25.135
2002	25.008
2003	24.913
2004	24.791
2005	24.668
2006	24.674
2007	24.923
2008	25.2
2009	25.411
2010	25.591
2011	25.751
2012	25.576
2013	25.341
2014	25.048
2015	24.702
2016	23.792
2017	22.861
2018	22.51
2019	22.131
2020	21.64
2021	21.621
2022	22.062
2023	22.182