Year	% (modeled ILO estimate)
1991	55.134
1992	54.873
1993	54.283
1994	54.306
1995	53.441
1996	52.486
1997	52.149
1998	51.568
1999	50.966
2000	50.02
2001	49.095
2002	48.608
2003	48.074
2004	47.487
2005	47.027
2006	46.748
2007	46.106
2008	45.961
2009	46.394
2010	46.434
2011	46.061
2012	45.353
2013	45.502
2014	45.633
2015	45.663
2016	45.315
2017	45.455
2018	45.615
2019	45.267
2020	44.223
2021	44.111
2022	44.644
2023	45.319