Year	% (modeled ILO estimate)
1991	48.449
1992	48.576
1993	48.472
1994	48.697
1995	48.913
1996	49.643
1997	50.298
1998	50.567
1999	51.017
2000	51.563
2001	51.864
2002	52.267
2003	52.342
2004	52.636
2005	53.022
2006	53.136
2007	52.924
2008	53.114
2009	52.543
2010	52.206
2011	52.076
2012	52.247
2013	52.767
2014	53.696
2015	54.267
2016	54.803
2017	55.356
2018	55.747
2019	56.39
2020	56.172
2021	55.667
2022	56.055
2023	55.828