Student loan debt in 2013

The Federal Reserve just issued its most recent quarterly report on household debt and credit. Though it reviews household debt and credit of all sorts, I was interested in what it had to say about student-loan debt:

• Outstanding student loan balances reported on credit reports increased to $1.08 trillion (+$53 billion) as of December 31, 2013, representing a $114 billion increase for 2013.
• About 11.5% of student loan balances are 90+ days delinquent or in default.

Note on page nine of the report the downward trend in 90-day delinquency rates for all loan types, except for student loans (which is trending upward).