Year	% (modeled ILO estimate)
1991	50.631
1992	50.555
1993	50.418
1994	49.598
1995	48.669
1996	49.05
1997	50.065
1998	50.733
1999	51.121
2000	51.296
2001	51.311
2002	51.196
2003	50.972
2004	50.652
2005	50.972
2006	52.212
2007	53.373
2008	53.987
2009	54.189
2010	54.06
2011	53.807
2012	53.69
2013	53.72
2014	53.873
2015	54.093
2016	54.311
2017	55.034
2018	57.357
2019	51.959
2020	40.32
2021	46.266
2022	45.065
2023	45.864