The growing level of student loan debt notwithstanding, the number of complaints about student loans filed by consumers to the CFPB fell by double digits during the fourth quarter of 2015, according to an analysis by Inside the CFPB of information in the CFPB’s consumer complaint database. Overall gripes fell by 31.7 percent from the third quarter to the fourth, the analysis found. The biggest player in this regard, the Sallie Mae spinoff Navient, saw criticisms fall 29.3 percent during the period, as well as by 13.8 percent year over year. This is particularly significant, given the company’s size and market dominance.On a year-over-year basis, overall kvetching rose a modest 2.7 percent, the data show. However, as the chart [with exclusive data chart]...