Frequencies for first 10,000 rows of prov1390 variable in pos1991 dataset :

technologis |
 t - bs med |
       tech |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,705       97.05       97.05
          1 |        130        1.30       98.35
          2 |         53        0.53       98.88
          3 |         34        0.34       99.22
          4 |         17        0.17       99.39
          5 |         13        0.13       99.52
          6 |          9        0.09       99.61
          7 |          2        0.02       99.63
          8 |          9        0.09       99.72
          9 |          1        0.01       99.73
         10 |          8        0.08       99.81
         11 |          2        0.02       99.83
         12 |          3        0.03       99.86
         14 |          1        0.01       99.87
         16 |          3        0.03       99.90
         18 |          2        0.02       99.92
         19 |          2        0.02       99.94
         20 |          1        0.01       99.95
         22 |          1        0.01       99.96
         26 |          1        0.01       99.97
         29 |          1        0.01       99.98
         55 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016