Year	% (modeled ILO estimate)
1991	57.142
1992	52.347
1993	49.689
1994	46.282
1995	49.633
1996	47.486
1997	48.564
1998	49.827
1999	49.948
2000	50.069
2001	50.19
2002	50.311
2003	50.433
2004	50.554
2005	50.675
2006	51.827
2007	53.416
2008	53.474
2009	50.424
2010	49.376
2011	50.515
2012	51.586
2013	51.807
2014	52.053
2015	52.176
2016	52.162
2017	53.216
2018	53.042
2019	53.896
2020	52.239
2021	52.901
2022	53.919
2023	54.94