Adults who are married report being far happier than those in any other relationship status, according to a new Gallup Poll.

“Any way you analyze those data, we see a fairly large and notable advantage to being married in terms of how people evaluate their life,” said poll author Jonathan Rothwell, principal economist at Gallup.

From 2009 to 2023, more than 2.5 million adults in the United States were asked how they would rate their current life, with zero being the worst possible rating and 10 being the highest. Then the researchers asked respondents what they anticipated their happiness level would be in five years.

To be considered thriving, a person had to rank their current life as a seven or higher and their anticipated future as an eight or higher, according to the survey.

Over the survey period, married people consistently reported their happiness levels higher than their unmarried counterparts, ranging from 12% to 24% higher depending on the year, according to the data.