Year	% (modeled ILO estimate)
1991	50.709
1992	50.664
1993	50.547
1994	50.363
1995	50.117
1996	50.165
1997	50.161
1998	50.102
1999	49.976
2000	49.79
2001	50.018
2002	50.134
2003	50.174
2004	50.17
2005	50.146
2006	50.472
2007	50.753
2008	50.966
2009	51.069
2010	51.038
2011	51.631
2012	52.112
2013	52.491
2014	52.742
2015	52.907
2016	52.5
2017	51.998
2018	51.426
2019	50.819
2020	50.336
2021	50.129
2022	50.866
2023	50.999