Year	% of total employment
1991	23.93648397059959
1992	25.178131481454734
1993	24.590575807573185
1994	25.478481114430537
1995	27.44695423929684
1996	27.392758231410482
1997	24.71973934116326
1998	25.79903368185468
1999	25.226094494394914
2000	26.898117410327753
2001	27.411350472286873
2002	29.67545688565492
2003	28.997482130305652
2004	29.616721379216955
2005	29.155524448056358
2006	29.67311301976365
2007	29.717647310548625
2008	30.065884445809576
2009	31.94647482614889
2010	31.224525584758705
2011	31.14781249979459
2012	32.38075317598409
2013	33.16607379324894
2014	32.99955254683449
2015	32.99330363085522
2016	33.902185257350276
2017	34.67984040296157
2018	34.543924503711814
2019	34.8452920594811
2020	38.94640402615801
2021	36.086919912031675
2022	35.90462881895059
2023	36.519893810172164