So many people rented one-way trucks to move out of California in 2021 that U-Haul outlets in the state ran out of inventory for most of the year, the nation’s largest renter of do-it-yourself trucks reports.

“California remained the top state for out-migration,” U-Haul says in a news release announcing the latest findings of its annual U-Haul Growth Index, which ranks states based on “the net gain of one-way U-Haul trucks entering a state versus leaving that state in a calendar year.” U-Hauls migration trends data are compiled from more than two million annual one-way U-Haul truck customer transactions.