Year	% (modeled ILO estimate)
1991	28.926
1992	28.82
1993	28.418
1994	28.119
1995	27.746
1996	27.736
1997	27.643
1998	27.483
1999	27.23
2000	27.059
2001	27.145
2002	27.341
2003	27.368
2004	27.398
2005	27.282
2006	27.427
2007	27.505
2008	27.586
2009	27.667
2010	27.725
2011	27.822
2012	25.647
2013	23.614
2014	23.324
2015	23.009
2016	22.615
2017	22.252
2018	21.952
2019	21.716
2020	21.43
2021	22.05
2022	22.725
2023	22.963