WASHINGTON — The nation’s economy grew at an unexpectedly brisk 3.3% annual pace from October through December as Americans showed a continued willingness to spend freely despite high interest rates and price levels that have frustrated many households. Thursday’s report from the Commerce Department said the gross domestic product — the economy’s total output of goods and services — decelerated from its sizzling 4.9% growth rate the previous quarter. But the latest figures still reflected the surprising durability of the world’s largest economy, marking the sixth straight quarter in which GDP …