Year	% (modeled ILO estimate)
1991	54.671
1992	52.989
1993	51.744
1994	50.094
1995	45.844
1996	43.385
1997	44.334
1998	44.362
1999	44.544
2000	44.643
2001	45.133
2002	43.607
2003	41.412
2004	41.197
2005	40.78
2006	41.948
2007	43.243
2008	44.9
2009	46.169
2010	44.717
2011	45.788
2012	46.094
2013	47.705
2014	48.956
2015	49.227
2016	51.065
2017	52.218
2018	52.857
2019	55.142
2020	54.392
2021	54.737
2022	53.998
2023	54.279