Year	% (modeled ILO estimate)
1991	25.193
1992	25.356
1993	25.561
1994	25.796
1995	26.058
1996	26.281
1997	26.455
1998	26.647
1999	26.838
2000	27.02
2001	27.075
2002	27.138
2003	27.201
2004	27.086
2005	26.97
2006	27.261
2007	27.558
2008	27.86
2009	28.157
2010	29.427
2011	29.485
2012	29.542
2013	29.601
2014	30.012
2015	30.428
2016	30.848
2017	34.023
2018	34.262
2019	34.453
2020	33.738
2021	34.957
2022	34.593
2023	34.599