I don't keep track. Lots of factors come into play. How many are in the tank at the same time. Are there any predators. How much am I willing to overfeed to increase survival rate. Which also means how often am I going to have to change water. Last year I had less adults and clutches and I was very focused and rehomed 300. This year I have more clutches but less dedication, I am letting them hatch in my main tank so some have got to be fish snacks. I expect I will land about 300 again.