Read my post 12. The Space Program has very little impact.
I failed to copy the best part.
“Even at the highest launch rate, however, Space Shuttle and Titan launches add less than 0.25% of the total chlorine present in the upper atmosphere. This tiny amount of chlorine would decrease the yearly average of global ozone by just 0.0065%. This reduction is far less than even the variation in ozone levels due to natural phenomena like volcanic eruptions and solar flares. The launch rate of vehicles with solid rocket boosters would have to be increased by at least two orders of magnitude to have a comparable effect on the ozone layer as natural processes. “
Oh! I agree, you just wondered where the Chlorine came from and the Ammonium Perchlorate is a huge source, although miniscule in the grand scheme of things