Union Membership by Nativity for 11-Month and 12-Month Samples, Percent of Employees, 1994–2025
Line chart comparing union membership rates by nativity using 12-month (solid) and 11-month (dashed) samples from 1994 to 2025. U.S.-born workers are light teal and foreign-born workers dark green. Solid and dashed lines move together, indicating minimal differences between samples.