Year	% (modeled ILO estimate)
1991	34.547
1992	34.605
1993	34.662
1994	34.718
1995	34.772
1996	34.826
1997	34.878
1998	34.93
1999	34.981
2000	35.031
2001	35.081
2002	35.129
2003	35.176
2004	35.22
2005	35.263
2006	35.305
2007	35.372
2008	35.441
2009	35.511
2010	35.583
2011	35.656
2012	35.73
2013	35.805
2014	35.88
2015	35.956
2016	36.033
2017	36.11
2018	36.188
2019	36.265
2020	31.937
2021	30.663