Year	% (modeled ILO estimate)
1991	50.328
1992	49.857
1993	49.728
1994	49.588
1995	49.321
1996	49.507
1997	48.726
1998	47.826
1999	47.358
2000	48.197
2001	42.403
2002	38.016
2003	41.168
2004	39.358
2005	39.947
2006	40.238
2007	41.925
2008	41.799
2009	41.461
2010	41.972
2011	44.975
2012	47.386
2013	47.721
2014	47.759
2015	51.135
2016	51.001
2017	51.446
2018	50.747
2019	50.008
2020	43.405
2021	47.853
2022	50.67