How important is Amazon to Seattle's bottom line? According to PSBJ, the online retailer is behind a whopping 71% of the 2.2 million square feet of office space currently under construction in the city. And that doesn't even include their 3.3-million-square-foot campus at Seventh and Westlake avenues that's set to begin soon. All hail our mighty Amazon overlords. [PSBJ]