Year	% (modeled ILO estimate)
1991	37.96
1992	38.482
1993	40.338
1994	41.878
1995	40.469
1996	39.062
1997	39.526
1998	42.836
1999	43.377
2000	43.645
2001	42.756
2002	43.338
2003	44.623
2004	42.779
2005	43.053
2006	44.151
2007	44.404
2008	44.391
2009	43.722
2010	43.997
2011	43.897
2012	44.833
2013	45.744
2014	44.536
2015	43.442
2016	43.953
2017	43.233
2018	43.106
2019	43.817
2020	40.86
2021	42.927
2022	44.371
2023	44.665