Here are the production numbers for barracuda's. All makes and models combined.
1970--55,499
1971--18,690
1972--18,450
1973--22,213
1974--11,734
Total produced--126,586
As you can see, even though the 71 is the most saught after becuase of the grill, The 1974 is actually the rarest of all the barracuda's. They are all great and are all muscle cars.