Source: European Central Bank (ECB).
(+) numbers mean purchases of USD, (-) numbers mean sales of USD. Unpublished data.
Source: Deutsche Bundesbank
Release: German Foreign Exchange Intervention
Deutsche Bundesbank, German Intervention: Bundesbank Purchases on the Dollar/D-Mark (Millions of DEM) [DEINTDUSDDM], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/DEINTDUSDDM/, August 1, 2015.