Year	% (modeled ILO estimate)
1991	50.51
1992	50.475
1993	50.354
1994	50.164
1995	49.918
1996	49.938
1997	49.871
1998	49.777
1999	49.653
2000	49.535
2001	49.636
2002	49.674
2003	49.733
2004	49.691
2005	49.673
2006	49.86
2007	50.019
2008	50.154
2009	50.175
2010	50.13
2011	50.488
2012	50.761
2013	51.288
2014	51.428
2015	51.487
2016	51.181
2017	50.821
2018	50.422
2019	50.013
2020	49.537
2021	49.292
2022	50.023
2023	50.024