Year	% (modeled ILO estimate)
1991	21.269
1992	21.528
1993	21.806
1994	21.894
1995	22.068
1996	22.165
1997	22.425
1998	22.652
1999	22.863
2000	23.093
2001	23.261
2002	23.231
2003	23.215
2004	23.234
2005	23.242
2006	23.212
2007	23.192
2008	23.149
2009	23.07
2010	22.992
2011	20.362
2012	21.237
2013	22.247
2014	23.325
2015	24.38
2016	24.306
2017	24.14
2018	24.005
2019	23.818
2020	22.672
2021	22.792
2022	23.047
2023	23.249