Pictured in this graph: what xG does to a motherfucker.
It thought this graph was super interesting as it is a near-perfect illustration of when data analytics and advanced statistics started to enter into football (2014-2016) and some of the effects it's had on the game.
So my suspicion that the 'efficiency' of shots has gone up with the introduction of data analysis seems to be true. I just hope that we don't completely lose worldies from outside the box in a decade or two