Contrarians may suspect a bubble, but analysts at DBRS said in a new report this week that credit card loan balances in the U.S. reached a new post-financial-crisis high in December 2016, which they characterized as a reflection of consumers’ “gradual inclination to judiciously undertake incremental credit card debt.” According to their analysis, credit card debt accelerated last year. “After steadily increasing over the past five years, growth in credit card debt accelerated in 2016 at an average monthly, year-over-year growth rate of 6.1 percent, compared to 4.2 percent in 2015, and 2.9 percent in 2014,” DBRS said. Citing the Federal Reserve data for December 2016, the analysts found...