Year	% (modeled ILO estimate)
1991	53.637
1992	51.313
1993	50.176
1994	51.891
1995	52.425
1996	51.096
1997	49.897
1998	50.159
1999	48.817
2000	46.903
2001	44.909
2002	45.505
2003	47.637
2004	49.149
2005	49.739
2006	51.777
2007	54.397
2008	56.501
2009	54.876
2010	53.01
2011	51.104
2012	50.806
2013	51.373
2014	52.711
2015	54.159
2016	54.653
2017	57.754
2018	58.403
2019	60.524
2020	59.049
2021	58.607
2022	60.289
2023	59.924