Year	% (modeled ILO estimate)
1991	66.813
1992	65.825
1993	64.796
1994	63.799
1995	62.214
1996	60.604
1997	59.244
1998	56.718
1999	53.35
2000	53.359
2001	54.176
2002	52.783
2003	51.387
2004	52.21
2005	51.627
2006	48.831
2007	49.449
2008	48.968
2009	48.83
2010	46.731
2011	47.951
2012	47.5
2013	44.134
2014	42.942
2015	42.061
2016	41.579
2017	40.839
2018	41.626
2019	40.405
2020	40.174
2021	39.364
2022	39.144
2023	39.524