Series Is Presented Here As Two Variables--(1)--Original Data, 1901-1923 (2)--Original Data, 1923-1935. Alsace Lorraine And Luxembourg Were Excluded Beginning In November, 1918, Saar And Palatinate Beginning July 1919. There Was A Coal Strike In The Ruhr In January And February Of 1904. There Was An Uprising In The Ruhr Source: 1901-1914 Data Are From Reichsamt Des Innern, Nachrichten Fur Handel Und Industrie; 1914-1918 Data Are Furnished By Institut Fur Weltwirschaft Und Seeverkehr Of Kiel University; 1919-1923 Data Are From Stahl And Eisen. The Sums Of Monthly Figures Each Year Agree With Annual Totals From Other Sources, Such As Jahrbuch.
This NBER data series m01122a appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.
NBER Indicator: m01122a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Coke Output for Germany [M0122ADEM422NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0122ADEM422NNBR/, October 9, 2015.