As part of its effort to prove that additional spectrum is a necessary ingredient to power further advancements in the U.S. wireless industry, trade association CTIA gathered together a collection of third-party research demonstrating, among other things, U.S. leadership in mobile broadband usage. "Even though the U.S. population is less than 5 percent of the world's total population and total U.S. subscribership is less than 6 percent of the world's total wireless subscribers, the U.S. accounts for more than 21 percent of global 3G/4G subscribers and 87 percent of global LTE subscribers," said CTIA, citing May 2012 data from Informa Telecoms & Media. The group said figures from Roger Entner of Recon Analytics show that if 500 MHz of spectrum were brought to market by 2020, as proposed under the FCC's National Broadband Plan, there would be a $166 billion increase in U.S. gross domestic product, at least 350,000 new U.S. jobs, an additional $36.7 billion in government revenues and a $13.1 billion increase in wireless applications and content sales. CTIA issued a one-page PDF document highlighting some of the third-party research and also created a blog post about the findings.