Year	% (modeled ILO estimate)
1991	47.03
1992	45.408
1993	45.655
1994	46.437
1995	46.121
1996	46.654
1997	47.039
1998	46.718
1999	46.335
2000	46.986
2001	48.679
2002	48.856
2003	48.388
2004	48.927
2005	49.612
2006	50.653
2007	51.264
2008	51.547
2009	50.919
2010	50.074
2011	51.449
2012	52.04
2013	52.854
2014	52.888
2015	52.98
2016	53.087
2017	53.547
2018	53.868
2019	53.744
2020	51.707
2021	51.866
2022	51.01
2023	50.591