The U.S. economy grew faster than initially thought in the third quarter, notching its quickest pace in three years, buoyed by robust business spending on equipment and an accumulation of inventories.

Gross domestic product expanded at a 3.3 percent annual rate last quarter also boosted by a rebound in government investment, the Commerce Department said in its second GDP estimate on Wednesday. That was the fastest pace since the third quarter of 2014 and a pickup from the second quarter’s 3.1 percent rate.