How many gallons of cum per year?

For my statistics class, I'm doing a paper on how much cum or ejaculate is released via masterbation annually in the United States. I need the mean, mode, median and standard deviation. Can you tell me how many ounces and grams of cum you release each tiem you jerk off? And how often do you spank the monkey? Wouldn't it be weird if you could literally drown in the amount of jizz released each year?

The US population is 300 million, half of them are male and 30 million of males are 14 or under. So that places the jizzable population at 120 million.