Year	% (modeled ILO estimate)
1991	27.088
1992	25.676
1993	23.922
1994	23.678
1995	23.576
1996	23.688
1997	23.966
1998	24.464
1999	24.394
2000	25.213
2001	26.509
2002	27.026
2003	27.835
2004	28.796
2005	29.532
2006	30.244
2007	30.707
2008	30.607
2009	34.482
2010	32.758
2011	31.347
2012	31.027
2013	30.779
2014	30.58
2015	30.803
2016	30.555
2017	30.52
2018	30.047
2019	29.872
2020	27.035
2021	27.972
2022	30.226
2023	30.354