1929 - Pinfall, forfeit, default, or DQ worth 1 team point in tournaments
1972 - Superior decision (win by 10+) added and worth 1/2 team point in tournaments
1976 - Superior decision raised to 12+ points and worth 3/4 team point. Major decision added (8 - 11) and worth 1/2 team point in tournaments
1985 - Tech fall (leading by 15+) added and worth 1 team point in tournaments
1988 - Superior decision eliminated and TF team scoring changed to 3/4 point
1995 - Major decision team scoring increased to 1 point. Tech fall eliminated and replaced with Match Termination (leading by 15+) and also worth 1 team point
1995 - Pinfall, forfeit, default, or DQ increased to 2 team points (so from 1985 to 1988 pinfall and tech fall were worth the same)
1997 - Tech fall restored with a back points requirement and worth 1.5 team points. Match termination still exists
Somewhere between 1998 and 2001 the match termination began to also be called tech fall, but the distinction between one with near fall and one without near fall remained. I cannot find these rule books online to confirm the year.
2016 - All tech falls worth 1.5 team points (near fall requirement removed)
Edit: forgot to include pinfall info