By what logic did you arrive at that conclusion?
We knew that artificial birth control would lead to the break down of the family and the collapse of sexual morality for quite some time - especially since 1968:
http://www.nd.edu/~afreddos/courses/264/popepaul.htm
http://www.firstthings.com/article/2008/07/002-the-vindication-of-ihumanae-vitaei-28
http://www.catholic-forum.com/churches/luxver/donumsanctum/hv30years.htm
http://catholicicast.com/2010/01/06/humanae-vitae-predictions-come-true-mp3/
http://pop.org/201003231196/prophecies-of-humanae-vitae