Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Thousands of Hours, Not Seasonally Adjusted

Frequency:  Quarterly

During Processing It Was Discovered That Monthly And Quarterly Figures For 1931 As Provided By NBER Do Not Agree, But Data Have Not Been Changed. The Annual Figure Provided Here Was Computed From Monthly Data. Source: Ministry Of Transport, Successive Issues Of "Railway Statistics"

This NBER data series q03080 appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.

NBER Indicator: q03080