I think I'd feel comfortably vindicated with a number about an order of magnitude higher :-)
Seriously: NYC is big. 77 kleptomaniacs in a city of 8.4 million people? Not bad! Per capita, we're one of the safest (and lowest-crime) cities in the country[1].
It's not the number of kleptos that is the matter of concern. What concerns me is the police/prosecutors/courts allowing these kleptos to run free. That it has happened 77 times shows that it wasn't just one guy somehow slipping through the system as a fluke. The kleptos are mere bellwethers for the systemic sickness in law enforcement.
