Frequencies for first 10,000 rows of gnrl_cntl_type_cd variable in pos1994 dataset :

    type of |
    control |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        106        1.06        1.06
         01 |        990        9.90       10.96
         02 |      1,777       17.77       28.73
         03 |      2,900       29.00       57.73
         04 |      2,000       20.00       77.73
         05 |        509        5.09       82.82
         06 |        553        5.53       88.35
         07 |        524        5.24       93.59
         08 |        195        1.95       95.54
         09 |         28        0.28       95.82
         10 |         63        0.63       96.45
         11 |         52        0.52       96.97
         12 |          7        0.07       97.04
         13 |         13        0.13       97.17
         15 |          2        0.02       97.19
         1A |         37        0.37       97.56
         1B |         72        0.72       98.28
         1C |         13        0.13       98.41
         2A |          3        0.03       98.44
         2B |        154        1.54       99.98
         2C |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017