Year	% (modeled ILO estimate)
1991	54.029
1992	53.046
1993	52.011
1994	50.851
1995	49.543
1996	48.41
1997	47.074
1998	45.538
1999	43.712
2000	41.988
2001	42.738
2002	43.503
2003	44.281
2004	45.069
2005	45.872
2006	46.694
2007	45.545
2008	44.428
2009	43.34
2010	42.454
2011	42.151
2012	41.852
2013	41.553
2014	41.254
2015	40.951
2016	40.644
2017	40.334
2018	40.021
2019	39.708
2020	38.259
2021	39.962
2022	41.735
2023	42.328