Year	% (modeled ILO estimate)
1991	39.129
1992	38.953
1993	38.536
1994	38.027
1995	36.75
1996	35.763
1997	34.725
1998	35.47
1999	36.249
2000	37.004
2001	36.798
2002	36.694
2003	36.559
2004	36.815
2005	37.264
2006	37.907
2007	38.189
2008	38.738
2009	39.024
2010	39.598
2011	41.259
2012	43
2013	46.443
2014	45.553
2015	43.681
2016	41.637
2017	43.279
2018	45.117
2019	45.08
2020	43.551
2021	44.223
2022	44.957
2023	45.554