Year	% (modeled ILO estimate)
1991	73.478
1992	72.578
1993	71.774
1994	70.839
1995	69.739
1996	68.647
1997	63.613
1998	61.497
1999	59.021
2000	54.755
2001	58.208
2002	56.747
2003	54.247
2004	52.914
2005	52.607
2006	52.277
2007	51.931
2008	53.498
2009	55.091
2010	53.691
2011	50.855
2012	49.635
2013	51.481
2014	51.701
2015	51.585
2016	49.608
2017	49.17
2018	48.971
2019	51.276
2020	46.113
2021	40.276
2022	39.092
2023	42.122