Year	% (modeled ILO estimate)
1991	20.181
1992	19.428
1993	23.166
1994	23.758
1995	23.357
1996	23.55
1997	25.192
1998	26.143
1999	26.743
2000	26.007
2001	25.622
2002	25.778
2003	26.822
2004	27.212
2005	27.713
2006	25.161
2007	22.437
2008	21.059
2009	17.895
2010	16.235
2011	16.126
2012	16.598
2013	16.531
2014	16.568
2015	17.384
2016	17.46
2017	18.024
2018	18.94
2019	19.444
2020	18.312
2021	19.33
2022	19.859
2023	19.763