Frequencies for first 10,000 rows of prov2885 variable in pos1995 dataset :

    type of |
    control |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        106        1.06        1.06
         01 |      1,040       10.40       11.46
         02 |      1,786       17.86       29.32
         03 |      2,976       29.76       59.08
         04 |      1,769       17.69       76.77
         05 |        509        5.09       81.86
         06 |        611        6.11       87.97
         07 |        506        5.06       93.03
         08 |        195        1.95       94.98
         09 |         27        0.27       95.25
         10 |         61        0.61       95.86
         11 |         54        0.54       96.40
         12 |          7        0.07       96.47
         13 |         14        0.14       96.61
         15 |          2        0.02       96.63
         1A |         40        0.40       97.03
         1B |         98        0.98       98.01
         1C |         13        0.13       98.14
         2A |          3        0.03       98.17
         2B |        181        1.81       99.98
         2C |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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