I think with the throwing events, we are seeing possibly a world-record escalation, fuelled by two decades of steroid use.
The first steroid in the west was developed specially (for weightlifting) in 1960. By the 70s, I think, steroid use was widespread in athletic throwing events, but not necessarily institutionalized. In the UK, for example, Geoff Capes was at it because all the others were. He was later banned as an athletic mentor because he was leading young athletes into steroid use.
During the 80s, (as became apparent on the fall of the Berlin Wall at the end of the decade) the East German team was virtually being forced into steroid and testosterone use.
By the 1970s, everyone had begun routinely throwing over 22m in the shot putt and (as I mentioned earlier) everyone over 22m is a documented steroid user. So the record went up and up until it went to 23.12 (in 1990) and then the steroid bubble burst (partly because the USA enacted a 1990 law making steroid trafficking a crime) and there it stopped.