Release: NBER Macrohistory Database
This Index Is A Mean Of Percentage Deviations From Secular Trends Corrected For Seasonal Variations And Expressed In Units Of Standard Deviations. The Number Of Series Included Rises From Two In 1855-1880, To Six In 1887-1896, And To Seven In 1897-1914. Source: Journal Of The American Statistical Association, March, 1926, P.60.
This NBER data series q12010 appears on the NBER website in Chapter 12 at http://www.nber.org/databases/macrohistory/contents/chapter12.html.
NBER Indicator: q12010
National Bureau of Economic Research, Index of British Business for Great Britain [Q12010GBQ511SNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/Q12010GBQ511SNBR, April 23, 2017.