Year	% (modeled ILO estimate)
1991	33.973
1992	34.044
1993	34.072
1994	34.119
1995	34.242
1996	34.146
1997	34.181
1998	34.281
1999	34.305
2000	34.308
2001	34.195
2002	34.198
2003	34.128
2004	34.127
2005	33.941
2006	33.769
2007	33.614
2008	33.474
2009	33.351
2010	33.242
2011	35.462
2012	39.15
2013	32.005
2014	32.668
2015	31.608
2016	33.543
2017	30.919
2018	32.681
2019	31.858
2020	30.868
2021	32.451
2022	33.601
2023	33.752