For a little more math fun:
Gain in 2017 over 2016:
5e 395748-255004= 140744 (+55%)
PF 74551-53908= 20643 (+38%)
SW 37693-28002= 9691 (+35%)
3.5e 21992-27089= -5097 (-19%)
Other 89497-75117= 14380 (+19%)
Nice work.
A suggestion, in the Spellcasting section maybe if the saving throw DC and attack modifier could be presented outside of the text block it would be easier to glance at and find. Maybe those two values could be highlighted in the same style as the weapon attack modifier or the combat...