Year	% (modeled ILO estimate)
1991	81.849
1992	81.422
1993	81
1994	80.57
1995	80.142
1996	79.715
1997	79.271
1998	78.813
1999	78.339
2000	77.841
2001	77.333
2002	76.805
2003	76.264
2004	75.704
2005	75.132
2006	74.544
2007	72.7
2008	70.791
2009	68.819
2010	66.788
2011	64.704
2012	62.571
2013	60.402
2014	58.203
2015	57.936
2016	57.688
2017	57.413
2018	57.103
2019	56.735
2020	56.192
2021	56.356
2022	56.253
2023	56.143