Year	% (modeled ILO estimate)
1991	57.21
1992	56.801
1993	56.387
1994	55.963
1995	55.529
1996	55.087
1997	54.634
1998	54.174
1999	53.705
2000	53.229
2001	52.749
2002	52.263
2003	51.772
2004	51.283
2005	50.794
2006	50.308
2007	49.825
2008	49.343
2009	48.868
2010	48.397
2011	47.926
2012	47.457
2013	46.989
2014	46.522
2015	46.053
2016	45.686
2017	45.28
2018	44.815
2019	44.337
2020	43.687
2021	43.468
2022	43.189
2023	43.187