Year	% (modeled ILO estimate)
1991	28.847
1992	29.339
1993	29.982
1994	30.23
1995	30.476
1996	31.001
1997	31.348
1998	31.711
1999	32.137
2000	32.651
2001	32.962
2002	33.35
2003	33.797
2004	34.374
2005	34.806
2006	35.735
2007	36.494
2008	37.385
2009	38.358
2010	39.693
2011	41.207
2012	42.773
2013	44.276
2014	45.721
2015	47.201
2016	48.645
2017	48.774
2018	49.638
2019	53.395
2020	57.443
2021	49.202
2022	50.732
2023	51.778