Frequencies for a_c1_28 variable in snf_rollup2540_96_1996 dataset :

    a_c1_28 |      Freq.     Percent        Cum.
------------+-----------------------------------
        116 |          1        0.01        0.01
        534 |          1        0.01        0.02
       2731 |          1        0.01        0.03
       3680 |          1        0.01        0.04
       3938 |          1        0.01        0.05
       5559 |          1        0.01        0.06
      10365 |          1        0.01        0.07
      16301 |          1        0.01        0.08
      27746 |          2        0.02        0.10
      29039 |          1        0.01        0.11
      30067 |          1        0.01        0.12
      32553 |          1        0.01        0.14
      36077 |          1        0.01        0.15
      68271 |          1        0.01        0.16
    1550482 |          1        0.01        0.17
          . |      9,592       99.83      100.00
------------+-----------------------------------
      Total |      9,608      100.00

by Jean Roth , jroth@nber.org , 17 Feb 2018