Really interesting -- but raises a question: why aren't we like this? Sweden is the way the monetary future was supposed to look 1/ nytimes.com/2018/11/21/bus…
But America has been moving in the opposite direction, with cash rising relative to GDP sine 1980 2/ 
However, more than all the growth relative to GDP is in large-denomination bills, many of them held abroad 3/ frbsf.org/files/2012_Ann…
Clearly, the dollar as the prime currency for criminals worldwide is a big factor. But we also seem to be lagging in digitalization. Why? Greater social exclusion? Higher inequality? Just cultural conservatism? Anyway, interesting 4/
