When did the roman Catholic church first ban birth control?

The Catholic Church has always been against Birth Control. Birth control is has been used since the times of the ancient Greeks and the Romans. Animal skin condoms and poisons were used as spermicides. Birth control is mentioned in Genesis 38:8-10. In this story, Onan is ordered to sleep with his brother's widow. He "pulled out" to not get her pregnant and was slain as a result. Another mention against control is in Deuteronomy 23:1. Where It says "He whose testicles are crushed or whose male member is cut off shall not enter the assembly of the Lord. Strong Words and definitely discouraging to those interested in spreading their wild oats safely. Church leaders have voiced their agreement with these sentiments for many centuries. Clement of Alexandria (AD195) says, "Because of its divine institution for the propagation of man, the seed is not to be vainly ejaculated, nor is it to be damaged, nor is it to be wasted". The Churches immutable stand, like it or not has always been the same, If you want to avoid pregnancy don't have sex. And you can go so far as to say that they even disapprove of sex just for fun, because it is supposed to lead to pregnancy, nothing else.