@driven_by_data tweeted on Sep 26, 2017 at 12:04 AM in reply to @driven_by_data:

@PoulsenBo @nytimes @lottefolke @KarenSkjoldager ..our primary source for the historical data. see here https://t.co/6DhtsWFIUH (data here https://t.co/SHnFODHTbu)