Year	% (modeled ILO estimate)
1991	43.109
1992	44.016
1993	44.923
1994	45.823
1995	46.715
1996	47.603
1997	48.483
1998	49.357
1999	50.226
2000	51.09
2001	51.945
2002	51.95
2003	51.955
2004	51.959
2005	51.962
2006	51.97
2007	51.978
2008	51.987
2009	51.995
2010	52.009
2011	52.022
2012	51.97
2013	51.918
2014	51.873
2015	51.473
2016	51.079
2017	50.695
2018	51.612
2019	50.643
2020	49.73
2021	51.538
2022	51.843
2023	52.107