Year	% (modeled ILO estimate)
1991	32.893
1992	32.991
1993	33.164
1994	33.191
1995	33.114
1996	33.303
1997	33.184
1998	33.007
1999	32.822
2000	32.884
2001	32.799
2002	32.886
2003	32.804
2004	35.665
2005	34.338
2006	33.03
2007	31.742
2008	30.477
2009	29.238
2010	28.025
2011	26.842
2012	25.69
2013	24.571
2014	23.488
2015	25.197
2016	26.959
2017	28.769
2018	30.623
2019	29.984
2020	29.693
2021	29.618
2022	29.456
2023	29.544