I'm now realizing that a huge proportion of that "drop" is probably just from the UK leaving the EU? If you count the UK with Europe, it's more like it's gone from 95% of the US economy ($14.6T to $15.3T in 2010) to... 85% or so today ($27T to $32T). C'mon.
Mark ChadbournJPMorgan Chase CEO Jamie Dimon: “The GDP of Europe has gone from 90% of America to 70%. And in our view, it will probably continue to erode over time. “Our stock exchange is worth, I think, 60, maybe 70 trillion today. Deutsche Börse, three. The FTSE UK, four. The French one, three.”