Year	% (modeled ILO estimate)
1991	54.731
1992	55.258
1993	55.454
1994	54.907
1995	54.32
1996	53.775
1997	53.173
1998	52.604
1999	52.024
2000	51.435
2001	50.873
2002	50.329
2003	49.82
2004	49.36
2005	48.829
2006	48.22
2007	47.552
2008	46.967
2009	46.418
2010	45.889
2011	45.33
2012	44.794
2013	44.219
2014	43.683
2015	43.112
2016	42.534
2017	41.963
2018	41.407
2019	40.838
2020	40.281
2021	40.23
2022	42.675
2023	43.128