Each day's count, and the last ten complete years for comparison. Counts are compared at the magnitude the networks catch reliably: M2.5+ in the US, M4.5+ elsewhere — below that, a country's total mostly measures how many seismometers it has.
Big earthquakes are followed by many smaller ones, close by and decaying with time. Each sequence here is a main shock plus every event inside its Gardner–Knopoff space–time window. Pick one to see its decay.
Small earthquakes vastly outnumber large ones, in a ratio so steady it has a law; energy works the other way round; and depth says what kind of fault you're looking at.