Year	% (modeled ILO estimate)
1991	46.379
1992	47.215
1993	45.015
1994	42.837
1995	40.69
1996	38.581
1997	36.519
1998	34.51
1999	32.559
2000	30.674
2001	34.662
2002	31.84
2003	29.223
2004	29.494
2005	27.862
2006	28.862
2007	28.88
2008	30.109
2009	29.512
2010	31.151
2011	29.441
2012	30.419
2013	29.628
2014	27.199
2015	25.947
2016	23.879
2017	26.29
2018	23.681
2019	23.904
2020	21.885
2021	19.974
2022	22.196
2023	22.87