Year	% (modeled ILO estimate)
1991	30.642
1992	29.502
1993	33.357
1994	32.564
1995	31.78
1996	32.659
1997	34.643
1998	34.909
1999	34.682
2000	32.76
2001	33.191
2002	33.623
2003	34.987
2004	34.645
2005	36.242
2006	32.471
2007	28.874
2008	27.937
2009	26.427
2010	24.969
2011	24.464
2012	24.258
2013	24.055
2014	23.852
2015	23.651
2016	23.654
2017	23.728
2018	23.824
2019	23.894
2020	22.681
2021	23.278
2022	23.022
2023	23.018