Year	% (modeled ILO estimate)
1991	55.853
1992	56.068
1993	56.426
1994	55.531
1995	54.652
1996	53.791
1997	52.924
1998	52.05
1999	51.159
2000	50.265
2001	49.374
2002	48.479
2003	47.584
2004	46.7
2005	45.806
2006	44.877
2007	43.942
2008	43.026
2009	42.13
2010	41.241
2011	40.345
2012	39.459
2013	38.579
2014	37.714
2015	36.849
2016	35.99
2017	35.144
2018	34.314
2019	34.075
2020	33.67
2021	33.707
2022	35.075
2023	35.095