Year	% (modeled ILO estimate)
1991	50.527
1992	51.967
1993	52.407
1994	52.005
1995	53.413
1996	52.434
1997	52.577
1998	52.602
1999	50.328
2000	50.045
2001	49.294
2002	48.966
2003	49.654
2004	49.771
2005	50.534
2006	51.749
2007	52.515
2008	53.111
2009	51.751
2010	53.754
2011	55.627
2012	55.783
2013	56.074
2014	56.019
2015	56.012
2016	55.645
2017	55.774
2018	55.563
2019	55.286
2020	50.194
2021	52.209
2022	55.178
2023	55.751