Year	% (modeled ILO estimate)
1991	48.187
1992	48.28
1993	48.412
1994	48.347
1995	48.149
1996	48.669
1997	49.073
1998	49.48
1999	49.615
2000	49.749
2001	49.884
2002	50.018
2003	50.153
2004	50.288
2005	50.423
2006	50.558
2007	50.694
2008	50.83
2009	50.966
2010	51.103
2011	51.241
2012	51.379
2013	51.518
2014	51.658
2015	51.451
2016	51.258
2017	51.065
2018	51.325
2019	51.599
2020	50.64
2021	50.638
2022	50.463
2023	50.649