I'm not sure what some of the spikes in years past were about, but again it's a scale of 'how popular the terms were' from 0-100 not a raw count. You can see it

I'm not sure what some of the spikes in years past were about, but again it's a scale of 'how popular the terms were' from 0-100 not a raw count. You can see it spiking hard recently compared to the average. Without seeing the raw numbers it's hard to tell exactly how significant it is though.