I also wonder what that graph looks like. DC was a tech powerhouse for a while with dulles corridor and the likes of AOL et al. But I'm not exactly sure when that really dwindled. I could see something resembling a U shape from that going down but DC growing if you changed the starting date a little later. Just throwing it out there, and Amazon will probably increase those numbers. The city's tech growth may not be stunning but the city itself is growing and there's definitely no shortage of money.