The striking aspect of the U.S. economy’s 2015 performance was weaker economic growth coinciding with a massive advance in nonfinancial debt. Nominal GDP, the broadest and most reliable indicator of economic performance, rose $549 billion in 2015 while U.S. nonfinancial debt surged $1.912 trillion. Accordingly, nonfinancial debt rose 3.5 times faster than GDP last year. This means that we can expect continued subpar growth for the U.S. economy.