Year	% of total labor force
1991	42.72070825396581
1992	42.76990820592599
1993	42.79118635689429
1994	42.97090727416771
1995	43.06802776827707
1996	43.17822055367364
1997	43.345232553522784
1998	43.403241951700885
1999	43.65363870250193
2000	43.76540571637528
2001	43.8459696427023
2002	43.975887724183366
2003	44.09604621264359
2004	44.20469749095401
2005	44.31374780122558
2006	44.389749571221834
2007	44.37673231402438
2008	44.385169147916535
2009	44.519491459619
2010	44.51744928011006
2011	44.552240154795484
2012	44.55288555264174
2013	44.55775148685253
2014	44.60672263528991
2015	44.56319509848266
2016	44.60361318365215
2017	44.668855824067975
2018	44.750012995692636
2019	44.864745676859556
2020	44.92924264160354
2021	45.1217177030927
2022	45.2422652450618
2023	45.33061542762044