Government Debt Increases Less-Private Debt More
In 2013 the government deficit fell sharply due to higher taxes, lower spending and the economic recovery, but at the same time private debt stopped shrinking and started to increase again, particularly in the fourth quarter.
Is there a causal connection? Yes, at least partially. While Ricardian equivalence doesn't hold fully, people will save more (and borrow, which is a form of dissaving, more) when deficits are high, as they fear that in the future they will have to pay more to and/or receive less from the government. And so when the deficit falls they will save less, and borrow more.