I don't have the exact number but I estimate 3,400 rounds:
500 rounds for each winter league, and I shoot in three;
250 for each summer league, and I shoot in two;
Practice between league nights (winter) 200 rounds;
Practice between league nights (summer) 200 rounds;
Fun plinking, rabbits and skunks 1,000 rounds.
That isn't exact, but based on what I know I buy each year it should be pretty damn close.