I had a conversation with a friend this weekend. She randomly said GT was #2 in total enrollment in the state of GA, and ahead of UGA. I looked it up and found this:
This page features colleges with the largest student population in Georgia.
www.univstats.com
For my purposes, I would consider total enrollment about equal for the top 4 on that list. Given that, you would think GT would be better than the numbers you quoted...and we know your numbers are probably accurate given how cheap GT fans are. I don't expect GT to be anywhere close to UGA athletic donations, but given the numbers, you would hope GT could at least break $20 million. Nope.
The other thing is GT's male enrollment is pretty high. I would make a guess (maybe a bad one) that males give more to their school's sports programs than females do.
Really odd numbers all around for GT.