As the family continues to fall apart, a growing segment of the population is poorer and lonelier than they were 30 years ago, according to a new paper published by the Pew Research Center on Tuesday.

Almost 40% of adults age 25 to 54 lived alone in 2019, according to Pew, compared to just 29% in 1990. “The growth in the single population is driven mainly by the decline in marriage,” Pew explained before further noting that unpartnered adults generally have lower earnings, are less likely to be employed, and have worse health outcomes than partnered adults.