Year	% (modeled ILO estimate)
1991	49.362
1992	49.507
1993	49.721
1994	49.84
1995	49.995
1996	50.184
1997	49.76
1998	49.351
1999	48.941
2000	48.528
2001	48.111
2002	47.686
2003	46.826
2004	45.958
2005	45.093
2006	44.234
2007	43.389
2008	43.765
2009	44.133
2010	44.498
2011	44.857
2012	45.211
2013	45.227
2014	45.226
2015	45.107
2016	44.941
2017	44.762
2018	44.569
2019	44.386
2020	44.023
2021	43.577
2022	43.402
2023	43.221