Frequencies for first 10,000 rows of gnrl_cntl_type_cd variable in pos1996 dataset :

    type of |
    control |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        122        1.22        1.22
         01 |      1,648       16.48       17.70
         02 |      1,564       15.64       33.34
         03 |      2,985       29.85       63.19
         04 |      1,280       12.80       75.99
         05 |        538        5.38       81.37
         06 |        788        7.88       89.25
         07 |        370        3.70       92.95
         08 |        216        2.16       95.11
         09 |         19        0.19       95.30
         10 |          3        0.03       95.33
         11 |         12        0.12       95.45
         12 |          9        0.09       95.54
         13 |          5        0.05       95.59
         1A |         47        0.47       96.06
         1B |        121        1.21       97.27
         1C |         17        0.17       97.44
         2A |          4        0.04       97.48
         2B |        250        2.50       99.98
         2C |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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