(Bloomberg) -- The US is scoring below average on a new index measuring the well-being of the nation.Most Read from BloombergRockstar Plans to Announce Much Anticipated ‘Grand Theft Auto VI’US 30-Year Mortgage Rate Tumbles by Most in More Than a YearAdam Neumann Remains a Billionaire Even With WeWork BankruptcyApple Co-Founder Wozniak Is Hospitalized in Mexico, Reports SayThe index, a project of the American Academy of Arts & Sciences, seeks to go beyond traditional economic indicators to assess