Universal Coverage: A Revenue Windfall? - Prescriptions Blog - NYTimes.com: With universal coverage, "by 2020, there [would] be an additional 8.5 million workers over 65. And by 2030, an additional 16.8 million. That’s the lowest of three projected participation rates. We’re being conservative. The increased tax revenues would add $312 billion to the U.S. Treasury in 2020 alone and $927 billion in 2030."