From Kauffman Index: http://www.kauffman.org/Details.aspx?id=898

"May 23, 2007 – While the rate of entrepreneurial activity has remained remarkably consistent over the past decade with nearly 465,000 people creating new businesses on average each month, subtle year-to-year shifts in the gender, demographic, geographic and ethnic make-up are changing the public face of the American entrepreneur. This is according to a national assessment of entrepreneurial activity by the Ewing Marion Kauffman Foundation."

(465,000)*(12)