I'm looking for a list of all scoring and scoring-related rules changes in the NFL. While the NFL goes back to 1920s, I'll be satisfied with just a list of rules changes going back to 1970, when the NFL and AFL merged.
Examples of rules changes that I'm looking for are like:
- 1994 - NFL implemented the 2 point conversion rule.
- 2011 - NFL changed the kickoff location from the 30yd line to the 35yd line
- 2018 - NFL changed the kickoff rule so that there's no more running starts by the kicking team until after the kicker kicks the ball.
Something that lists all these rules changes throughout the NFL history is what I'm looking for. I searched on the Internet using Google, checked Wikipedia, and looked at the NFL website but I haven't found anything resembling what I'm looking for.
The closest resource I found using Google was this at Sports Attic but unfortunately, it stops at year 2003.
What are all the rule changes, especially from 1970 to now?