Frequencies for first 10,000 rows of gnrl_cntl_type_cd variable in pos2007 dataset :

    type of |
    control |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         92        0.92        0.92
         01 |      1,517       15.17       16.09
         02 |        995        9.95       26.04
         03 |      2,904       29.04       55.08
         04 |      1,802       18.02       73.10
         05 |        520        5.20       78.30
         06 |      1,063       10.63       88.93
         07 |        242        2.42       91.35
         08 |        204        2.04       93.39
         09 |         18        0.18       93.57
         10 |          6        0.06       93.63
         11 |         10        0.10       93.73
         12 |          9        0.09       93.82
         13 |         21        0.21       94.03
         1A |         55        0.55       94.58
         1B |        193        1.93       96.51
         1C |         23        0.23       96.74
         2A |          5        0.05       96.79
         2B |        319        3.19       99.98
         2C |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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