Year	% (modeled ILO estimate)
1991	60.137
1992	60.23
1993	60.179
1994	60.577
1995	60.482
1996	59.798
1997	59.782
1998	59.922
1999	59.578
2000	59.88
2001	58.711
2002	57.576
2003	56.005
2004	55.627
2005	55.295
2006	55.151
2007	54.022
2008	53.471
2009	51.718
2010	50.171
2011	49.985
2012	49.912
2013	50.063
2014	50.023
2015	50.01
2016	50.167
2017	50.441
2018	50.204
2019	50.809
2020	49.018
2021	50.491
2022	50.531
2023	51.037