Year	% (modeled ILO estimate)
1991	41.056
1992	40.997
1993	41.189
1994	41.278
1995	41.024
1996	40.709
1997	39.697
1998	38.687
1999	37.684
2000	36.686
2001	35.696
2002	34.715
2003	33.744
2004	32.787
2005	31.844
2006	30.918
2007	30.008
2008	29.116
2009	28.243
2010	28.185
2011	27.604
2012	27.026
2013	26.466
2014	25.952
2015	25.174
2016	24.547
2017	24.46
2018	24.397
2019	24.372
2020	22.423
2021	22.82
2022	22.781
2023	23.26