The image stats make sense, but seriously, 30% have kids before 20? I know of maybe 4 people out of my graduating class of 1500 that had kids in high school. I could understand maybe 5-10%, but 30% is way too high. Even now that I'm in my mid 20s, I only know a few people that are having kids, most are waiting until their 30s.
Also, saying that "early half of all 15- to 19-year-olds" have had sex seems kinda low. I would estimate that closer to 75% of kids have had sex by the time they graduate high school. Of course I actually live in Canada, and we don't have as many of those crazy christians up here.