Year	% (modeled ILO estimate)
1991	28.617
1992	29.443
1993	30.371
1994	31.499
1995	32.404
1996	33.181
1997	33.362
1998	31.518
1999	29.213
2000	26.7
2001	28.152
2002	29.499
2003	28.668
2004	32.138
2005	30.374
2006	29.321
2007	32.468
2008	34.298
2009	32.367
2010	27.945
2011	23.79
2012	20.025
2013	17.348
2014	21.166
2015	22.287
2016	28.743
2017	29.71
2018	30.357
2019	33.004
2020	31.693
2021	30.905
2022	33.84
2023	30.299