Year	% (modeled ILO estimate)
1991	18.149
1992	18.245
1993	18.259
1994	18.238
1995	18.169
1996	18.098
1997	17.975
1998	17.837
1999	17.77
2000	17.633
2001	17.443
2002	17.26
2003	17.058
2004	16.874
2005	16.692
2006	16.46
2007	16.199
2008	16.037
2009	15.888
2010	15.731
2011	15.548
2012	15.397
2013	15.279
2014	15.203
2015	15.152
2016	15.302
2017	15.451
2018	15.58
2019	15.661
2020	14.218
2021	14.505
2022	15.687
2023	15.812