I’ve saved a copy to my computer for future reference!
I got X2 in 2008 so that was when it first changed for me. I used PSP 9 until then. I tended to not upgrade every year but every 2 to 3 versions. Went from X2 to X4 to X7 to X8 and finally to 2021. I might have upgraded the JASC versions every year because so much was being added each time. I think I started with V4.