Year	% (modeled ILO estimate)
1991	53.18
1992	53.144
1993	53.24
1994	53.056
1995	53.255
1996	53.409
1997	53.853
1998	53.94
1999	53.964
2000	53.676
2001	53.77
2002	53.691
2003	53.425
2004	53.134
2005	52.928
2006	52.817
2007	52.713
2008	52.534
2009	52.109
2010	51.699
2011	51.404
2012	50.886
2013	50.801
2014	50.581
2015	50.3
2016	49.463
2017	48.989
2018	48.933
2019	49.004
2020	47.054
2021	47.368
2022	49.513
2023	50.226