Year	% (modeled ILO estimate)
1991	35.089
1992	38.019
1993	36.414
1994	36.745
1995	34.348
1996	35.392
1997	36.847
1998	37.017
1999	39.458
2000	40.043
2001	41.493
2002	41.958
2003	41.628
2004	42.22
2005	43.665
2006	43.992
2007	45.267
2008	45.193
2009	46.863
2010	47.24
2011	47.118
2012	48.828
2013	49.154
2014	50.365
2015	50.561
2016	49.979
2017	51.956
2018	52.52
2019	52.752
2020	53.045
2021	54.877
2022	55.291
2023	54.785