Year	Percent of total labor force (Units)
1990	6.300
1991	11.800
1992	13.600
1993	16.400
1994	11.400
1995	13.341
1996	12.343
1997	11.246
1998	10.576
1999	13.133
2000	16.087
2001	18.242
2002	20.235
2003	19.942
2004	19.276
2005	18.052
2006	14.169
2007	9.944
2008	7.466
2009	8.514
2010	9.635
2011	9.632
2012	10.088
2013	10.328
2014	8.988
2015	7.499
2016	6.161
2017	4.888
2018	3.846
2019	3.279
2020	3.163
2021	3.373
2022	2.874
2023	2.820
2024	2.928
2025	2.986
2026	3.045
2027	3.200
2028	3.259
2029	3.317