Year	% (modeled ILO estimate)
1991	44.475
1992	44.926
1993	45.25
1994	45.471
1995	45.596
1996	46.047
1997	46.365
1998	46.564
1999	46.644
2000	46.601
2001	46.996
2002	47.243
2003	45.903
2004	44.568
2005	43.242
2006	41.925
2007	40.621
2008	39.33
2009	38.054
2010	36.796
2011	35.556
2012	34.336
2013	33.137
2014	31.96
2015	30.807
2016	29.678
2017	28.574
2018	27.497
2019	26.445
2020	26.198
2021	26.376
2022	26.156
2023	26.077