Year	% (modeled ILO estimate)
1991	50.598
1992	48.423
1993	47.072
1994	48.342
1995	48.51
1996	46.982
1997	45.581
1998	45.602
1999	43.86
2000	42.041
2001	41.137
2002	41.616
2003	43.066
2004	44.464
2005	44.681
2006	46.7
2007	48.981
2008	50.791
2009	49.404
2010	47.902
2011	46.597
2012	46.567
2013	46.925
2014	47.957
2015	49.128
2016	49.293
2017	51.94
2018	52.438
2019	54.187
2020	52.706
2021	52.348
2022	54.183
2023	53.74