U.S. - Physical, engineering, and biological research - 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	11,479	23.8%	10.5%	5.9%	594,218	93.8%	83.7%	71.4%
	2007	11,686	23.2%	10.3%	5.7%	631,475	94.3%	84.8%	73.0%
	2006	11,367	23.5%	10.6%	5.8%	615,400	94.3%	84.7%	72.0%
	2005	10,900	23.6%	10.6%	5.9%	602,877	94.4%	84.8%	72.3%
	2004	10,569	24.2%	10.8%	5.9%	587,016	94.4%	84.7%	72.1%
	2003	10,288	25.5%	11.6%	6.2%	561,184	94.3%	84.0%	69.8%
	2002	9,339	21.8%	8.6%	3.7%	355,085	91.9%	77.5%	56.6%
	2001	9,202	21.4%	7.9%	3.2%	343,690	91.2%	76.3%	55.8%
	2000	8,524	21.0%	7.3%	3.2%	319,453	91.3%	75.9%	58.2%
	1999	8,153	21.0%	7.3%	3.1%	301,353	91.1%	75.8%	57.7%
	1998	8,049	19.8%	7.1%	2.8%	275,141	90.3%	75.3%	55.8%