Year	% (modeled ILO estimate)
1991	56.833
1992	52.629
1993	48.43
1994	41.77
1995	40.358
1996	42.196
1997	42.125
1998	41.551
1999	42.478
2000	42.343
2001	41.199
2002	39.223
2003	37.337
2004	35.839
2005	32.428
2006	30.728
2007	30.293
2008	26.802
2009	25.413
2010	25.541
2011	22.709
2012	23.637
2013	23.708
2014	24.7
2015	24.891
2016	24.711
2017	26.476
2018	24.515
2019	22.229
2020	21.026
2021	20.164
2022	20.264
2023	21.269