Year	% (modeled ILO estimate)
1991	50.415
1992	49.597
1993	48.617
1994	47.607
1995	46.643
1996	45.936
1997	45.238
1998	44.606
1999	43.971
2000	43.34
2001	42.719
2002	42.256
2003	41.737
2004	41.236
2005	40.724
2006	40.254
2007	42.447
2008	45.876
2009	44.453
2010	43.24
2011	42.433
2012	42.757
2013	42.152
2014	43.179
2015	42.939
2016	45.052
2017	46.7
2018	47.771
2019	49.754
2020	49.882
2021	52.892
2022	54.046
2023	53.888