Out of curiousity...everywhere I turn I see pregnant hispanic women....?

I know that all cultures have children but you don't see them crowding the stores and other public places. What you do see is either a vast majority of pregnant latinos everywhere you turn or these women pushing babies in strollers or walking with a bunch of kids of all ages and sizes. I'm asking for educational not racist reasons. I'm just curious as to the basis for this. Mature answers only please. For those of you who may accuse me of being racist...you are being defensive and immature.