Year	% (modeled ILO estimate)
1991	32.662
1992	32.425
1993	32.379
1994	32.113
1995	32.054
1996	31.838
1997	31.681
1998	31.462
1999	31.001
2000	30.633
2001	30.416
2002	30.457
2003	30.39
2004	30.179
2005	30.076
2006	29.569
2007	29.348
2008	28.771
2009	28.455
2010	28.066
2011	28.466
2012	28.676
2013	28.659
2014	28.588
2015	28.559
2016	28.361
2017	28.167
2018	28.013
2019	28.042
2020	25.854
2021	26.354
2022	27.895
2023	28.279