U.S. - Testing laboratories - by Year
Introductory text includes scope and methodology. Table includes only establishments with payroll. Nonemployers are shown separately. For descriptions of column headings and rows (industries), click on the appropriate underlined element in the table.

More data	Year	Firms by employment size of enterprise				Paid employees by employment size of enterprise
		Total	20 +	100 +	500 +	Total	20 +	100 +	500 +
	2008	5,264	20.9%	6.0%	2.6%	111,787	81.4%	54.9%	33.4%
	2007	5,041	20.4%	5.9%	2.5%	107,309	81.5%	56.2%	34.1%
	2006	4,987	20.3%	5.9%	2.4%	100,139	80.6%	53.0%	30.4%
	2005	4,981	19.9%	5.5%	2.3%	93,049	79.4%	50.7%	27.9%
	2004	4,921	20.1%	5.6%	2.3%	93,485	79.2%	50.9%	29.0%
	2003	4,772	20.1%	5.7%	2.4%	94,523	79.7%	52.5%	30.4%
	2002	4,708	19.8%	5.4%	2.2%	100,797	81.7%	56.2%	36.5%
	2001	4,244	21.4%	5.7%	2.4%	98,422	82.5%	56.7%	37.1%
	2000	4,040	22.9%	5.9%	2.4%	89,887	81.8%	53.5%	33.3%
	1999	4,115	23.2%	6.1%	2.5%	88,014	81.5%	53.1%	32.8%
	1998	4,224	23.1%	6.1%	2.3%	89,998	81.8%	53.7%	32.0%