Year	% (modeled ILO estimate)
1991	42.524
1992	42.789
1993	43.081
1994	43.089
1995	42.625
1996	42.94
1997	43.019
1998	43.868
1999	44.089
2000	44.113
2001	44.129
2002	44.048
2003	43.615
2004	43.293
2005	43.002
2006	42.408
2007	42.014
2008	42.134
2009	41.997
2010	41.219
2011	40.789
2012	40.732
2013	40.66
2014	40.6
2015	38.933
2016	37.291
2017	35.678
2018	34.097
2019	32.55
2020	35.58
2021	34.087
2022	33.852
2023	33.82