Year	% (modeled ILO estimate)
1991	45.966
1992	44.031
1993	42.678
1994	42.08
1995	42.105
1996	40.88
1997	41.969
1998	41.777
1999	39.907
2000	40.295
2001	39.336
2002	34.583
2003	35.485
2004	34.882
2005	34.844
2006	35.45
2007	33.424
2008	33.754
2009	31.035
2010	35.354
2011	33.318
2012	34.456
2013	32.854
2014	34.36
2015	36.814
2016	35.862
2017	34.619
2018	34.877
2019	35.322
2020	32.253
2021	34.193
2022	34.587
2023	32.912