Year	% (modeled ILO estimate)
1991	30.857
1992	30.744
1993	31.706
1994	32.57
1995	33.075
1996	31.07
1997	34.185
1998	36.232
1999	36.537
2000	35.835
2001	38.144
2002	37.654
2003	37.812
2004	36.223
2005	39.148
2006	39.307
2007	41.021
2008	41.433
2009	40.182
2010	39.896
2011	40.771
2012	45.695
2013	46.097
2014	45.786
2015	44.715
2016	41.183
2017	41.282
2018	42.95
2019	45.156
2020	38.188
2021	40.028
2022	42.534
2023	40.082