Year	% (modeled ILO estimate)
1991	34.944
1992	33.389
1993	32.836
1994	32.382
1995	30.587
1996	32.199
1997	33.295
1998	32.461
1999	31.52
2000	30.789
2001	31.677
2002	32.087
2003	32.827
2004	35.219
2005	36.01
2006	37.051
2007	36.179
2008	36.975
2009	37.221
2010	37.556
2011	37.686
2012	37.393
2013	38.958
2014	36.58
2015	37.033
2016	37.6
2017	36.805
2018	36.706
2019	36.642
2020	33.893
2021	34.39
2022	36.593
2023	37.139