Year	% of total labor force
1991	37.44978838392614
1992	37.356897414155846
1993	37.91369208483277
1994	38.448057278662
1995	39.568887503711956
1996	40.71481813540513
1997	41.80988978426503
1998	41.68672827521938
1999	42.85286784245695
2000	41.21908117041251
2001	43.09771638880445
2002	43.434365752601515
2003	43.75239189108093
2004	44.05551340644413
2005	44.344723893480854
2006	44.667422911799186
2007	45.06733383152684
2008	45.222947158183345
2009	45.33321866512765
2010	45.98664540562089
2011	45.905306462209424
2012	45.91248004049315
2013	45.87110920369677
2014	45.804310150231046
2015	45.42760005994378
2016	45.78182238709046
2017	45.91582549021674
2018	46.111415698342725
2019	46.12842028834847
2020	44.286534721139546
2021	45.97589926078402
2022	46.507437303924235
2023	46.289474017961155