Year	% (modeled ILO estimate)
1991	53.647
1992	52.954
1993	51.989
1994	51.613
1995	51.136
1996	50.929
1997	50.576
1998	49.49
1999	48.434
2000	47.411
2001	46.555
2002	45.931
2003	45.408
2004	44.916
2005	44.376
2006	43.859
2007	43.319
2008	43.238
2009	43.203
2010	43.336
2011	43.548
2012	43.782
2013	43.859
2014	43.93
2015	44.004
2016	43.844
2017	43.609
2018	43.404
2019	43.203
2020	41.547
2021	41.602
2022	43.157
2023	43.439