Year	% (modeled ILO estimate)
1991	46.512
1992	49.339
1993	52.963
1994	53.378
1995	53.459
1996	52.603
1997	52.655
1998	53.168
1999	52.454
2000	51.712
2001	51.416
2002	51.392
2003	50.866
2004	49.972
2005	48.128
2006	46.203
2007	45.178
2008	44.782
2009	46.732
2010	48.254
2011	48.75
2012	48.673
2013	48.678
2014	49.081
2015	48.757
2016	49.264
2017	49.501
2018	49.627
2019	50.252
2020	45.843
2021	47.289
2022	50.745
2023	51.317