The number of U.S. newborns named "Mohammed" has jumped 100-fold since 1964, one way of determining the growth of second and third generation Muslims, according to a leading immigration watchdog.

Based on Social Security Administration baby name figures, there were only 29 babies born with one of the spellings of Mohammed in 1964. That has surged to 2,931.

The Center for Immigration Studies used the statistics to determine the growth of the Muslim community, a statistic the federal government doesn't chart.

"Given the fact that some U.S.- or European-born Muslim terrorists (such as Syed Farook in San Bernardino) have been menacing Western societies, are there any statistics on the growth of the second-generation Muslim populations?" blogged CIS Fellow David North.

The growth in babies name Mohammed grew until the 9/11 attacks, when it fell. Wrote North, "Note the drop after 2001, presumably a reaction to the events of 9/11, and then the sharp increase from 2004 to 2014, of more than 1,000."

His full blog post is here.

Paul Bedard, the Washington Examiner's "Washington Secrets" columnist, can be contacted at pbedard@washingtonexaminer.com.