What is the long-term trend in American union membership?

Union membership:

A union is a set of people who band together to make alternatives concerning their working circumstances. employees can impact salaries, work hours, blessings, workplace health and protection, and different paintings-related concerns by using becoming a member of a union. workers of all ages inside the united states have the right to join a union underneath US regulation.

American union membership is following a trend of decline for$50$years.

In the mid-localid="1645337370199" $1950$-s over $25\%$of workers belonged to the union while now this number dropped to 11.1%

Therefore, wage disparity between men and women has changed throughout time. In recent years, the wage disparity between men and women has narrowed.