Year	% (modeled ILO estimate)
1991	55.507
1992	56.233
1993	55.001
1994	53.048
1995	52.497
1996	53.833
1997	55.225
1998	55.703
1999	56.5
2000	57.227
2001	56.808
2002	57.638
2003	56.288
2004	57.102
2005	57.205
2006	58.165
2007	58.108
2008	57.466
2009	56.263
2010	54.868
2011	54.124
2012	53.615
2013	53.179
2014	52.944
2015	53.032
2016	53.891
2017	54.133
2018	54.489
2019	54.932
2020	54.294
2021	55.089
2022	56.774
2023	56.666