Year	% (modeled ILO estimate)
1991	51.349
1992	51.271
1993	51.212
1994	51.098
1995	51.018
1996	51.097
1997	51.058
1998	51.2
1999	51.191
2000	51.321
2001	51.444
2002	51.557
2003	51.746
2004	51.896
2005	52.091
2006	52.046
2007	51.997
2008	51.825
2009	51.663
2010	51.589
2011	51.4
2012	51.529
2013	51.284
2014	51.253
2015	51.045
2016	51.158
2017	51.365
2018	51.384
2019	51.252
2020	49.12
2021	49.366
2022	51.163
2023	52.146