Year	% (modeled ILO estimate)
1991	24.929
1992	25.391
1993	25.888
1994	26.111
1995	26.303
1996	26.82
1997	27.365
1998	27.464
1999	27.746
2000	27.371
2001	26.541
2002	27.592
2003	26.726
2004	25.086
2005	26.954
2006	27.206
2007	29.036
2008	30.305
2009	30.426
2010	31.309
2011	32.542
2012	35.453
2013	37.943
2014	39.952
2015	40.513
2016	42.231
2017	44.141
2018	46.981
2019	48.235
2020	49.64
2021	51.543
2022	54.144
2023	55.505