The number of subprime borrowers obtaining credit cards and auto loans continued to increase during the fourth quarter of 2015, causing a slight — but not yet significant — increase in delinquencies, TransUnion reported Wednesday.

The national consumer data firm said that at the conclusion of 2015, there were 1.26 million more subprime consumers carrying credit cards with outstanding balances than there were at the end of 2014. The company also reported there were 1.21 million additional subprime consumers with auto loans than at the end of 2014.

Auto loan delinquencies increased to 1.24% in Q4 2015, compared to 1.16% a year prior. Credit card delinquencies rose to 1.58%, the highest level since Q4 2012, when the rate was 1.62%.