Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Millions of Square Yards, Not Seasonally Adjusted

Frequency:  Monthly

Notes:

Series Is Presented Here As 3 Variables: (1) Original Data, Monthly And Annual, 1919-63; (2) Annual Data Only, 1919-63. Note That Annual Data For (1) Are The Sum Of Monthly Data, Collected 1919-33 By Standard Statistics Co. And 1934-63 By The Portland Cement Association; While Annual Data For (3) Were Compiled Solely By The Portland Cement Association. For This Reason, Slight Differences In Annual Figures Between (1) And (3) Exist For The Period 1919-33, While From 1934 On The Values Are The Same, Except For Occasional Rounding Or Truncation Errors Of Insignificant Magnitude. Content Is Yardage Of Concrete Pavement In Contracts Awarded For Roads, Bridges, And Alleys In The United States, Including Alaska Beginning January 1959, And Hawaii Beginning November 1960. Beginning 1938, Contracts Awarded For Airports Are Deducted; Before This Time Volume For Airports Was Negligible. Seasonal Factors Are Obtained By Subtraction Rather Than Division. For Further Information See Lipsey And Preston, P. 239. Source: Portland Cement Association-Standard Trade Statistics Co., 1919-33, Standard Trade And Securities, Standard Statistics Co; 1934-63, Data Compiled By The Portland Cement Association Of Chicago, And Published In "Survey Of Current Business" (See Lipsey And Preston, P. 239).

This NBER data series m02088 appears on the NBER website in Chapter 2 at http://www.nber.org/databases/macrohistory/contents/chapter02.html.

NBER Indicator: m02088