Year	% (modeled ILO estimate)
1991	73.545
1992	72.826
1993	72.152
1994	71.374
1995	70.491
1996	69.602
1997	66.2
1998	63.2
1999	60.202
2000	56.199
2001	60.799
2002	58.702
2003	57.002
2004	56.141
2005	56.067
2006	55.994
2007	55.921
2008	57.715
2009	59.49
2010	58.127
2011	56.333
2012	55.034
2013	57.513
2014	57.576
2015	58.906
2016	56.61
2017	56.47
2018	55.164
2019	57.343
2020	52.836
2021	45.684
2022	43.721
2023	46.485