Year	% (modeled ILO estimate)
1991	30.439
1992	30.57
1993	30.533
1994	30.329
1995	30.088
1996	29.741
1997	28.566
1998	28.406
1999	29.154
2000	29.662
2001	28.89
2002	27.362
2003	25.551
2004	22.371
2005	19.964
2006	19.304
2007	18.652
2008	21.04
2009	16.859
2010	15.03
2011	13.774
2012	14.334
2013	14.413
2014	14.886
2015	16.56
2016	19.695
2017	20.855
2018	21.089
2019	21.488
2020	20.761
2021	25.117
2022	24.786
2023	25.02