Table 1.--Portland and masonry cement demand and production
                                                    in the United States1/,2/
                                                      (Million metric tons)
           -----------------------------------------------------------------------------------
                                Portland cement                         Masonry cement
           Year          ---------------------------               ---------------------------
                            U.S.             U.S.                     U.S.             U.S.
                           demand         production                 demand         production
           -----------------------------------------------------------------------------------
           1970---------   68.946            66.225                  2.722             2.722
           1971---------   71.668            69.860                  2.722             3.001
           1972---------   75.122            73.250                  3.512             3.458
           1973---------   80.249            75.796                  3.773             3.648
           1974---------   73.595            72.108                  3.139             3.086
           1975---------   62.667            60.596                  2.657             2.653
           1976---------   66.073            64.616                  3.020             2.964
           1977---------   71.423            69.255                  3.438             3.374
           1978---------   76.964            73.891                  3.787             3.371
           1979---------   76.984            72.923                  3.443             3.400
           1980---------   69.000            66.820                  2.802             2.768
           1981---------   65.228            63.641                  2.523             2.521
           1982---------   58.606            56.297                  2.212             2.072
           1983---------   64.273            62.066                  2.692             2.658
           1984---------   74.324            68.414                  3.035             2.981
           1985---------   76.909            68.584                  3.060             2.955
           1986---------   80.769            69.261                  3.319             3.237
           1987---------   82.166            68.819                  3.484             3.303
           1988---------   81.919            67.727                  3.397             3.261
           1989---------   80.813            68.279                  3.152             2.988
           1990---------   79.537            68.399                  3.069             2.911
           -----------------------------------------------------------------------------------
             1/U.S. demand based on cement shipments.
             2/Includes Puerto Rico and total imports of cement and clinker.