Well.... to married couples (it does to we singles, as you might know)
Which is important to remember in this discussion. Since the sexual revolution of the 1960's, there is no Catholic teaching (official or informal) of "No Kids? No Sex!" Nope. In the Catholic Family Planning and Birth Control, sex is welcomed. As much as desired. "More than usual" as Catholic posters here have noted (one trice). It's not about abstinence (that's the former Catholic position - unofficially), it's about HAVING sex but contraceptively - with the means and end of not conceiving, with the intent of HAVING sex ("more than otherwise") but "rendering procreation unlikely." Sex done contraceptively. Contraceptive sex. Contraception. It is what it is. I'm not saying it's good or bad, moral or immoral, pious or impious (I'm actually entirely uncertain), I'm just saying it is what it is. (And that I UNDERSTAND why many regard it as "double talk", I'm not saying it is, I'm saying I sure understand why nearly EVERY Catholic known to me considers it so).
You seem desirous of noting the OFFICIAL position. Sure. So, what does it say? A couple (let's assume for valid reasons) wants no children - for at least the next 5 years. Is the official position now in Catholic Family Planning and Birth Control that ergo for at least 5 years they are to have no sex ("No kids? NO sex!")? Abstinence? OR is the official position that they may have sex (perhaps as much as desired, perhaps a great abundance of sex, perhaps more than otherwise) but it will teach them how to do it contraceptively, so as to render procreation impossible? Contraception? Does NFP teach NO SEX EVER or CONTRACEPTIVE sex?