Year	% (modeled ILO estimate)
1991	52.355
1992	52.412
1993	52.364
1994	52.263
1995	52.138
1996	52.165
1997	52.122
1998	52.004
1999	51.9
2000	51.87
2001	51.852
2002	51.93
2003	51.954
2004	52.031
2005	52.053
2006	52.283
2007	52.464
2008	52.589
2009	52.675
2010	52.713
2011	52.966
2012	53.163
2013	53.255
2014	53.244
2015	57.186
2016	55.316
2017	53.432
2018	49.475
2019	45.531
2020	41.473
2021	41.274
2022	41.211
2023	41.966