Year	% (modeled ILO estimate)
1991	55.823
1992	56.193
1993	56.487
1994	55.768
1995	55.047
1996	54.325
1997	53.601
1998	52.876
1999	52.148
2000	51.42
2001	50.691
2002	49.961
2003	49.23
2004	48.5
2005	47.77
2006	47.04
2007	46.311
2008	45.585
2009	44.86
2010	44.138
2011	43.418
2012	42.701
2013	41.987
2014	41.277
2015	40.57
2016	39.867
2017	39.169
2018	38.475
2019	38.055
2020	37.693
2021	37.747
2022	39.506
2023	39.684