Year	% (modeled ILO estimate)
1991	29.252
1992	27.86
1993	26.238
1994	24.041
1995	23.455
1996	22.775
1997	21.757
1998	22.773
1999	23.163
2000	25.197
2001	25.781
2002	26.064
2003	27.589
2004	26.787
2005	23.681
2006	23.12
2007	25.061
2008	25.139
2009	25.046
2010	23.926
2011	23.474
2012	22.842
2013	23.895
2014	23.631
2015	24.197
2016	24.143
2017	24.783
2018	25.724
2019	26.017
2020	24.855
2021	28.926
2022	31.9
2023	35.073