Year	% (modeled ILO estimate)
1991	50.053
1992	50.297
1993	50.343
1994	50.038
1995	49.619
1996	49.003
1997	48.271
1998	47.889
1999	48.867
2000	48.23
2001	47.51
2002	46.824
2003	46.318
2004	45.289
2005	44.609
2006	43.95
2007	38.06
2008	37.47
2009	32.95
2010	33.96
2011	35.44
2012	36.61
2013	34.03
2014	35.26
2015	35.43
2016	36.79
2017	36.83
2018	36.3
2019	36.19
2020	35.08
2021	41.26
2022	39.208
2023	38.527