Year	% (modeled ILO estimate)
1991	53.914
1992	54.335
1993	55.061
1994	49.935
1995	47.099
1996	45.054
1997	44.786
1998	44.723
1999	44.22
2000	44.268
2001	45.501
2002	46.223
2003	46.882
2004	45.954
2005	45.985
2006	46.051
2007	46.234
2008	46.451
2009	47.252
2010	46.957
2011	46.608
2012	46.859
2013	45.987
2014	45.703
2015	45.791
2016	45.835
2017	45.515
2018	45.205
2019	44.836
2020	44.083
2021	44.289
2022	44.321
2023	44.465