Year	% (modeled ILO estimate)
1991	54.744
1992	55.263
1993	56.102
1994	57.108
1995	57.616
1996	57.474
1997	57.266
1998	57.361
1999	57.147
2000	56.392
2001	55.271
2002	54.392
2003	53.742
2004	52.79
2005	52.038
2006	51.283
2007	50.534
2008	49.791
2009	49.957
2010	49.31
2011	48.636
2012	48.26
2013	47.72
2014	47.402
2015	47.472
2016	47.554
2017	47.229
2018	46.892
2019	46.496
2020	45.656
2021	45.875
2022	45.636
2023	45.796