Year	% (modeled ILO estimate)
1991	44.044
1992	43.398
1993	42.756
1994	42.098
1995	41.451
1996	41.837
1997	42.417
1998	43.134
1999	43.627
2000	43.685
2001	44.009
2002	45.524
2003	47.103
2004	47.321
2005	48.446
2006	47.979
2007	46.776
2008	46.25
2009	45.684
2010	35.812
2011	36.028
2012	33.896
2013	28.283
2014	25.732
2015	26.96
2016	24.901
2017	22.921
2018	21.023
2019	23.964
2020	21.612
2021	21.96
2022	18.581
2023	18.342