When did the whale whale become endangered?

Many whales are endangered, so there is no actual answer for this question. Most whales have become endangered because of whaling, or whale hunting. Here are a few endangered whales:

-Humpback (not endangered), over 80,000 left

-Blue Whale, between 10,000 and 25,000 left

-Fin Whale, only 119,000 left

-Sperm Whale, only 360,000 left

-Right Whale, 450 North Atlantic Right Whale left, due to harsh whaling (it is named after whalers who called it the "right" whale to catch)