In short:
A live-stream broadcast of China’s military parade has captured Xi Jinping and Vladimir Putin discussing biotechnology’s potential to extend life.
An interpreter translating Mr Putin can be heard saying in Mandarin that human organ transplants could let “us live younger and younger, and perhaps even achieve immortality”.
Mr Xi responded that it may be possible for people to live to 150 years this century.
Maybe for a Senator or other member of the patrician class.
But even in the last century, we’ve seen more movement than what you’re describing.
So, closer to 20%
The vast majority of these advanced have occurred in the last 70 years. The intervening 2500 has been relatively flat.
Mostly just a comparison of wealth and technology.