"c           VAR 0550      01239 TUBES   3R 921-955               MD= 1E-37   "
"c           REF 0550         LOC 1122 WIDTH  9             DK  18 COL 53-61  "
"c                                                                            "
"c                                                                            "
"c              AUTOMOBILE TIRE INNER TUBES, SHIPMENTS                        "
"c              --------------------------------------                        "
"c                                                                            "
"c              NBER SERIES:  01239                                           "
"c              AREA COVERED:  U.S.                                           "
"c              UNITS:  THOUSANDS OF INNER TUBES                              "
"c              ANNUAL COVERAGE:  NONE                                        "
"c              QUARTERLY COVERAGE:  NONE                                     "
"c              MONTHLY COVERAGE:  01/1921-07/1955                            "
"c              SEASONAL ADJUSTMENT:  NONE                                    "
"c              SOURCE:  SURVEY OF CURRENT BUSINESS, MAY 1939, P.18  AND      "
"c              FOLLOWING ISSUES AS WELL AS BI-ANNUAL SUPPLEMENTS.            "
"c                                                                            "
"c              NOTES:  DATA REPORTED TO THE RUBBER MANUFACTURERS'            "
"c              ASSOCIATION (RMA) WERE RAISED TO INDUSTRY TOTALS BY THEM.     "
"c              SHIPMENTS INCLUDE ONLY TUBES FORWARDED TO PURCHASERS; THOSE   "
"c              FORWARDED TO WAREHOUSES, BRANCHES, OR ON A CONSIGNMENT BASIS  "
"c              ARE INCLUDED IN STOCKS FIGURES.                               "
"c                   FEDERAL EXCISE TAX WENT INTO EFFECT JUNE 30, 1932.  THE  "
"c              HEAVY SHIPMENTS WERE UNDOUBTEDLY TAKEN TO ESCAPE THE TAX AND  "
"c              RESULTANT PRICE RISE.                                         "
"c                   ACCORDING TO THE RMA, FIGURES FOR THE YEAR 1942 WERE     "
"c              PUBLISHED ONLY"SO THAT THERE WILL BE NO BREAK IN THE          "
"c              CONTINUITY OF TUBE STATISTICS."  IN THAT YEAR, DEALERS MADE   "
"c              LARGE RETURNS OF MANUFACTURERS OF STOCKS ORIGINALLY INTENDED  "
"c              FOR EXPORT, BECAUSE OF GOVERNMENT RESTRICTIONS; SHIPMENTS     "
"c              WERE NOT ADJUSTED FOR THESE RETURNS (SEE TABLE OF"TOTAL       "
"c              U.S.A. AUTOMOTIVE INNER TUBES, SHIPMENTS, PRODUCTION AND      "
"c              INVENTORY," COMPILED BY THE STATISTICAL AND ACCOUNTING        "
"c              DEPARTMENT OF THE RMA).                                       "
"c                   BEGINNING IN 1951, DATA FOR MOTORCYCLE TUBES ARE         "
"c              INCLUDED.                                                     "
"c                                                                            "
"c              CHECKED MANUALLY; NO CORRECTIONS NECESSARY.                   "
"c                                                                            "
"c           ...............................................................  "