Year	% (modeled ILO estimate)
1991	41.995
1992	43.154
1993	43.263
1994	46.707
1995	46.969
1996	46.289
1997	46.161
1998	46.586
1999	47.156
2000	47.133
2001	47.32
2002	48.313
2003	48.578
2004	47.505
2005	48.427
2006	49.198
2007	50.165
2008	51.124
2009	51.409
2010	51.746
2011	52.08
2012	52.452
2013	52.425
2014	52.414
2015	52.487
2016	52.886
2017	53.16
2018	53.409
2019	53.668
2020	53.096
2021	52.507
2022	53.841
2023	53.873