Year	% (modeled ILO estimate)
1991	30.291
1992	30.234
1993	29.115
1994	28.409
1995	27.99
1996	27.123
1997	26.974
1998	26.238
1999	26.529
2000	26.64
2001	26.747
2002	26.853
2003	26.953
2004	27.243
2005	26.954
2006	26.653
2007	26.307
2008	25.974
2009	25.93
2010	26.568
2011	27.22
2012	27.887
2013	28.563
2014	29.25
2015	29.946
2016	30.652
2017	30.31
2018	29.945
2019	29.601
2020	29.247
2021	29.509
2022	29.666
2023	29.824