@lewiscowles1986 Second, the shift in both price and production levels I referenced is missed if you cut off at 1977. Industrial shrimp farming emerged in the mid 70s, and that change is what transformed it to a commodity protein.
Your earlier comment (that shrimp should be cheaper since they're ‘harvested from the ocean’) is off in two respects: that's not how the shrimp industry has worked for decades, and even if it did, ocean-caught is more rather than less expensive, production-wise.