Graph created by the Washington Post: https://www.washingtonpost.com/resizer/7IbsRIhRFbTYRuEjla6kiZQOwvY=/arc-anglerfish-washpost-prod-washpost/public/YC4GHPZ5M

Graph created by the Washington Post: https://www.washingtonpost.com/resizer/7IbsRIhRFbTYRuEjla6kiZQOwvY=/arc-anglerfish-washpost-prod-washpost/public/YC4GHPZ5MI5DHNQVM2TN4E4JZI.jpg https://www.washingtonpost.com/resizer/7IbsRIhRFbTYRuEjla6ki... You can see union membership was on the decline since the 1950s, but it accelerated around the 70s. It is hard to see the timeline in that graph, in this one it is harder to see the acceleration, but it is easier to see the timeline: https://rpubs.com/jncohen/uniondensity https://rpubs.com/jncohen/uniondensity