How Long Has the Catholic Church Banned Contraception?

This long.  Excerpts:

...The recent indignity by which the Obama administration wants to mandate everyone, including all Catholic institutions or their insurers, to pay for contraception, sterilization and abortion-inducing drugs, has raised the issue of Catholic teaching on these issues.

Some commentators have mistakenly asserted that the Catholic ban on these practices only goes back to Humanae Vitae (On the Regulation of Birth), by Pope Paul VI in 1968, or as far back as Casti Connubii (Of Chaste Wedlock), by Pope Pius XI in 1931...



Catholics do well to know this history of moral teaching on contraception and abortion to back up our position against the mandate, as well as to know better how to live the Catholic faith. Therefore, we will present some of the texts from the patristic (early Christian) sources to demonstrate how early was the Christian rejection of these practices, known widely in the Greco-Roman world...