Year	% (modeled ILO estimate)
1991	54.072
1992	53.639
1993	53.131
1994	52.601
1995	52.088
1996	51.698
1997	51.421
1998	51.17
1999	50.881
2000	50.457
2001	50.034
2002	49.609
2003	49.184
2004	48.76
2005	48.336
2006	47.911
2007	47.483
2008	47.052
2009	46.617
2010	46.187
2011	45.766
2012	45.345
2013	44.921
2014	44.497
2015	44.072
2016	43.639
2017	43.106
2018	42.557
2019	41.987
2020	41.574
2021	41.473
2022	41.001
2023	41.157