Year	% (modeled ILO estimate)
1991	37.43
1992	36.642
1993	35.643
1994	34.726
1995	33.977
1996	33.535
1997	33.075
1998	32.639
1999	32.185
2000	31.717
2001	31.249
2002	31.028
2003	30.752
2004	30.472
2005	30.173
2006	29.903
2007	31.269
2008	34.435
2009	34.104
2010	33.219
2011	32.827
2012	32.89
2013	32.854
2014	33.529
2015	33.488
2016	34.439
2017	36.711
2018	37.545
2019	39.655
2020	39.373
2021	42.439
2022	43.836
2023	44.079