Year	% (modeled ILO estimate)
1991	48.46
1992	48.784
1993	49.02
1994	49.2
1995	49.301
1996	49.608
1997	49.813
1998	49.902
1999	49.919
2000	49.809
2001	50.015
2002	50.126
2003	48.357
2004	46.592
2005	44.819
2006	43.11
2007	41.516
2008	39.89
2009	38.232
2010	36.615
2011	35.099
2012	33.716
2013	32.235
2014	30.777
2015	29.358
2016	28.13
2017	26.931
2018	25.709
2019	24.416
2020	23.773
2021	24.117
2022	24.127
2023	24.09