Fifty-one out of 60 of the top metropolitan areas in the United States added high-tech jobs in 2006, the most recent year for which complete data is available, according to Cybercities 2008: An Overview of the High-Technology Industry in the Nation's Top 60 Cities, a report by the technology trade group AeA (formerly the American Electronics Association). Seattle, Washington, led the nation, adding 7,800 net jobs in the high-tech sectors, with the New York City metro area second with 6.400 net jobs and Washington, D.C. third with 6,100. On a percentage basis, Riverside-San Bernardino, California, saw the fastest job growth with 12 percent. The leading metro areas by total high-tech employment in 2006 were New York City (316,500 jobs); Washington, D.C. (295,800); San Jose/Silicon Valley, California (225,300); Boston, Massachusetts (191, 700), and Dallas-Ft. Worth, Texas (176,000). San Jose/Silicon Valley led the nation in concentration of high-tech workers, followed by Boulder, Colorado; Huntsville, Alabama; Durham, North Carolina; and Washington, D.C. "These are the types of jobs every city wants. But how to attract and retain them is the key question all mayors, city council officials, and local business leaders grapple with," says Christopher Hansen, president and CEO of AeA. "All of these cybercities compete not only with each other for such critical factors of innovation as talent and capital - they compete with technology centers across the globe. AeA is concerned that future job growth will be jeopardized unless the United States prepares itself for a vastly more competitive global marketplace."