I used this article with a calculator to get the following graphs. I used the same number of partners (2) but changed the age. For 18-20 I put age of 20. For 21-24 the age was 22. And for 25-29 the age was 25.

Why make a sex calculator? We were inspired by a study published this month in the Archives of Sexual Behavior, which found that millennials (or snake people, if you prefer) are on pace to sleep with an average of eight partners during their lifetimes, fewer than Generation X (10 partners) and the baby boomers (11 partners). In other words, as a group, today’s young adults are shaping up to be less sexually prolific than their parents. But averages—and medians and modes, for that matter—only tell us so much, and when it comes to sex, they also hide the vast array of individual behavior that makes life so darn exciting. So we dove into the same data set that the paper’s authors used, the General Social Survey, and created this calculator to illustrate the full spectrum of Americans’ sexual histories. We used figures gathered between 2006 and 2014 that included answers from more than 13,000 survey takers.

Therefore this article used the data from the papers to create the figures.

As you can see from the figures all graphs are skewed right. This was shown in both the male and female groups.

Which brings us to the final issue: These figures are self-reported. People do, once in a blue moon, lie about sex. Memories get hazy. And there were some obvious signs that at least a few survey takers may have been fudging their answers a bit. For instance, round numbers are suspiciously popular. Not a lot of people report having slept with nine or 19 people. A bunch report sleeping with 10 or 20.

Graph 1 (Age 18-20) Graph 2 (Age 21-24) Graph 3 (Age 25-29)