Year	% (modeled ILO estimate)
1991	31.688
1992	32.499
1993	33.286
1994	32.872
1995	32.41
1996	31.973
1997	31.518
1998	31.026
1999	30.548
2000	30.049
2001	29.654
2002	29.209
2003	29.738
2004	30.277
2005	30.805
2006	31.409
2007	31.763
2008	32.105
2009	32.408
2010	32.699
2011	33.051
2012	33.389
2013	33.73
2014	34.061
2015	34.376
2016	34.737
2017	35.118
2018	35.42
2019	33.252
2020	32.185
2021	32.841
2022	33.422
2023	34.842