Something I just realized about this graph.
The year that a Jaeger got introduced in correlates with it's mark. All the Mark 1's (Yukon Brawler, Coyote Tango, Tacit Ronin) are from 2015. Diablo intercept (mark 2) is 2016, and Gipsy Danger is 2017, Tyhpoon/Cherno are 2018, and Striker Eureka are 2018.
At peak strength, the Pacific Rim defense corp consisted of
5 Mark I's
4 Mark II's
5 Mark III's
5 Mark IV's
2 Mark V's