It could be possible, but if you look back class of 2012 was one of the largest classes in recent history. During their yrs of training the DoD has slashed the budget, thus, it could be a manpower need regarding why numbers dropped.
I can't speak for other branches, but I can say as an AFROTC Mom of a 2012 cadet with a UPT slot, it was a bumper crop year for them. His det. had 100% selection rate. I know from other AFROTC posters(ERAU, VT, UND, PSU,etc), his det was not alone in the high selection rate. From what has always been explained to me is the AF does a % breakdown of how many will be offered to each type of commissioning source for that class yr. The AFA has the biggest % rated out of that pool. If the AFA cadets do not use up all of those slots, the remaining amount is now added towards the % of the other sources, this is to insure the UPT/UNT/CSO/ABM/UAV pipeline has the right amount at all times. This yr. it has been stated by AFA12 posters that the AFA did not use up all of their slots. Hence, why it was a bumper crop for AFROTC. Next yr. because of manpower needs, and if the AFA cadets go rated, it could be a barren year for other commissioning sources.
It can change that quickly.
I hope that helps you somehow to understand there is a lot that goes into the system, and that not to worry or use last years numbers as a reason to go Navy, CG, or AF.
If it was me, I would ask a different question. Not what the numbers were, but the percentages. 50 from the Navy sounds better than 30 from the AF and 25 from CG, but the fact is the Navy is the largest of all 3, and statistically I would think 25 from the CG is a higher amount given to the MMA.
I would follow that question up with what is the % of those that applied got it. CG may have a higher percentage given, but if more apply to CG than Navy or AF, you maybe looking at a more competitive pool.
Again, alot goes into this equation.