Year	% (modeled ILO estimate)
1991	32.729
1992	30.848
1993	30.367
1994	28.576
1995	35.696
1996	41.017
1997	38.232
1998	40.555
1999	40.881
2000	42.415
2001	41.095
2002	40.601
2003	39.007
2004	39.768
2005	38.953
2006	39.59
2007	40.228
2008	39.051
2009	38.212
2010	37.29
2011	33.893
2012	28.424
2013	28.23
2014	28.558
2015	27.229
2016	31.062
2017	29.351
2018	30.691
2019	33.178
2020	30.066
2021	31.243
2022	31.909
2023	32.169