Frequencies for a_c1_30 variable in snf_rollup2540_96_2011 dataset :

    a_c1_30 |      Freq.     Percent        Cum.
------------+-----------------------------------
       7041 |          1        0.06        0.06
      22330 |          1        0.06        0.11
      31550 |          1        0.06        0.17
      70203 |          1        0.06        0.22
     221224 |          1        0.06        0.28
     253719 |          1        0.06        0.33
    1883694 |          1        0.06        0.39
    1924424 |          1        0.06        0.44
          . |      1,801       99.56      100.00
------------+-----------------------------------
      Total |      1,809      100.00

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