Year	% (modeled ILO estimate)
1991	50.351
1992	49.893
1993	49.262
1994	48.495
1995	48.881
1996	48.871
1997	48.48
1998	48.766
1999	49.071
2000	50.007
2001	50.721
2002	50.863
2003	51.722
2004	51.238
2005	50.982
2006	50.946
2007	51.496
2008	51.926
2009	51.193
2010	51.03
2011	50.858
2012	50.724
2013	50.838
2014	50.339
2015	50.258
2016	50.303
2017	50.404
2018	50.603
2019	50.622
2020	50.162
2021	51.46
2022	52.07
2023	52.29