Is there more entitlement spending under Democratic or Republican presidents?

Republicans, according to this editorial in the Wall Street Journal:

In current political discourse, it is common to think of the Democrats as the party of entitlements, but long-term trends seem to tell a somewhat different tale. From a purely statistical standpoint, the growth of entitlement spending over the past half-century has been distinctly greater under Republican administrations than Democratic ones. Between 1960 and 2010, the growth of entitlement spending was exponential, but in any given year, it was on the whole roughly 8% higher if the president happened to be a Republican rather than a Democrat.

This is in keeping with the basic facts of the time: Notwithstanding the criticisms of "big government" that emanated from their Oval Offices from time to time, the administrations of Richard Nixon, Gerald Ford and George W. Bush presided over especially lavish expansions of the American entitlement state. Irrespective of the reputations and the rhetoric of the Democratic and Republican parties today, the empirical correspondence between Republican presidencies and turbocharged entitlement expenditures should underscore the unsettling truth that both political parties have, on the whole, been working together in an often unspoken consensus to fuel the explosion of entitlement spending.