Year	% (modeled ILO estimate)
1991	32.129
1992	31.027
1993	28.442
1994	26.053
1995	25.988
1996	25.426
1997	24.203
1998	25.146
1999	26.453
2000	28.201
2001	29.334
2002	29.925
2003	30.746
2004	29.469
2005	26.826
2006	26.459
2007	27.822
2008	28.042
2009	27.048
2010	26.746
2011	26.154
2012	25.032
2013	26.691
2014	25.811
2015	26.037
2016	26.163
2017	27.036
2018	28.146
2019	27.903
2020	26.911
2021	30.455
2022	33.287
2023	36.051