The age distribution of American entrepreneurs shifted significantly from 2007 to 2008, according to the latest U.S. Global Entrepreneurship Monitor report. From the executive summary:

For the total entrepreneurship and the established firms measures, the results indicate a marked reduction (around 8% to 9%) in entrepreneurial activity for individuals in the 18-44 age group and an increase of a similar amount in the 45-99 age group. While previous reports pointed toward this trend, this year’s data indicate the need to follow this trend closely because of the possible implications it could have for entrepreneurial behavior in the United States.

Stacy Perman wrote about this trend in June in her reader-suggested story Seniors as Entrepreneurs: Their Time Has Come, and we touched on it again in an overview piece about our annual roundup of young entrepreneurs this fall.

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