Year	% (modeled ILO estimate)
1991	55.37
1992	54.929
1993	54.547
1994	53.853
1995	53.225
1996	53.005
1997	52.657
1998	52.114
1999	51.606
2000	50.975
2001	50.516
2002	49.847
2003	48.754
2004	47.651
2005	46.75
2006	45.772
2007	44.101
2008	42.494
2009	40.929
2010	39.373
2011	37.759
2012	36.018
2013	34.249
2014	32.595
2015	30.909
2016	38.83
2017	29.851
2018	33.558
2019	40.142
2020	39.609
2021	39.37
2022	39.145
2023	38.879