Here are the cases of major earthquakes in the 1970's
So that's 7 notable earthquakes in 4 years. The 1973 page had NONE. What happens when we take a look at a more recent year like 2010?
That's like a hundred in six months. There's no way that's a coincidence. The only way you could dispute these findings is by saying people didn't care as much about earthquakes in the 70's, but THEY WERE EARTHQUAKES! People have always cared about earthquakes. You don't feel the entire ground shake under your feet and go "Oh, that was interesting" then act like it didn't happen, you write it down! Now we know there are way more powerful quakes occurring. The question becomes why? And how can we survive when the next one makes Richter himself shit his pants.