I'm sorry, I don't have a dog in this fight (obviously pun intended), but I need to point out how terrible and misleading these charts are.
The 2017 chart claims Pitbulls are responsible for 74% of fatal attacks on humans, which was apparently 29 attacks. However, if you do the math, you can see that there were 49 total fatal attacks which means pitbulls were responsible for 59% of fatal attacks, not 74%!
The same problem exists in the 2016 chart, where pitbulls are claimed to be responsible for 71% of attacks, but are clearly only responsible for 54% (22 of 41 total).
So, by all means keep campaigning for what you believe in, but for god's sake use beter data if you're going to do it.