Year	% (modeled ILO estimate)
1991	57.339
1992	57.291
1993	57.212
1994	57.121
1995	57.042
1996	57.034
1997	56.993
1998	57.018
1999	57.163
2000	57.131
2001	57.129
2002	56.258
2003	56.748
2004	54.799
2005	52.41
2006	50.611
2007	48.81
2008	48.33
2009	52.141
2010	51.66
2011	52.66
2012	53.6
2013	52.089
2014	51.549
2015	51.399
2016	50.06
2017	49.23
2018	48.12
2019	46.74
2020	46.94
2021	48.35
2022	44.45
2023	44.562