"Sources of U.S. Ecomomic Growth, 1948-1998"


                                          1948-73  1973-90  1990-96  1996-98
  Output Growth                             4.020    2.857    2.363    3.730
  Contribution of Non-Computer Outputs      3.978    2.686    2.106    3.327
  Contribution of Computer Investment       0.042    0.171    0.258    0.403

  Contribution of Capital and CD Services   1.623    1.376    0.914    1.304
        Non-Computers                       1.598    1.267    0.791    1.065
  Computers Capital Services                0.025    0.109    0.123    0.240
  Contribution of Labor Input               1.005    1.145    1.219    1.713
  Aggregate Total Factor Productivity       1.392    0.336    0.231    0.712

  Contribution of Capital Stock             1.386    1.095    0.726    1.044
  Contribution of Capital Quality           0.237    0.281    0.188    0.260
  Contribution of Labor Hours               0.493    0.940    0.855    1.436
  Contribution of Labor Quality             0.513    0.206    0.364    0.277

"Contribution of inputs and outputs are real growth rates weighted by average,
 nominal shares."
"All values are average, annual percentages."                    

Source: 1948-96 from Jorgenson and Stiroh (1999).                
        1996-98 preliminary estimates based on various BEA and BLS data.