More than half of Americans go an entire year without taking a day off.

A traveler sits on a tropical beach.
Credit: Marco Bottigelli/Getty Images

Fifty-one percent of the population — or about 129 million people — said they had gone a full year without taking a vacation, according to Allianz Travel Insurance’s 10th annual Vacation Confidence Index.

More than 96 million people reported having gone more than two years without taking a trip in the 2018 report, compared to about 93 million in 2017.

Allianz's survey found that the number of people who said they were confident they would take a vacation within the year — 48 percent — is at the lowest rate it’s been since 2010.

Respondents did not give specific reasons for their lack of vacations, however Allianz representatives point to areas like natural disasters and pricing as potential factors.

“Factors like a bumpy stock market and memories of hurricanes and terrorist attacks that make the world an uncertain place, may also sap vacation confidence,” Daniel Durazo, director of communications at Allianz Global Assistance USA, told Travel + Leisure. “Trends like bleisure travel, in which business travelers combine work trips with personal and leisure experiences, may also contribute to a decrease in taking a full week off.”

If you want to take a trip but aren't sure how to budget for it, check out these tips for saving.