Pack, I've made charts for 2 thru 10 year upgrades. Did you see the tabs at the bottom? It just gives a person the ability to project total pay over 20 years with whatever upgrade they think is realistic for their particular company.

I linked to 6 year upgrade just randomly.

The purpose of the charts is mostly aimed at giving a comparison between airlines. It is limited however because 'total compensation' A, B funds, per-diem, etc is more difficult for me to compile. On my regional charts I made a pretty good attempt because it's just a little 401k contribution stuff. At the majors I'm loath to try it - but I'm sure I'll get to it eventually