Seventh Part of the Seal
There's about 135 Raptors spread across like eight squadrons now. But it does seem like the F-16, F-15 and F-18 production lines will sadly outlive the F-22 line. Boeing just unveiled a new Stealth F-15 design a couple weeks ago.
Well lets also remember that those still being produced are not the same as the original line.
Example take a look at the original F-18s and then compare them to the single seat F/A-18E and two-seat F/A-18F Super Hornets. They are the same basic design, with improved armaments, a larger frame, and more efficient intakes.