Frequencies for a_c2_36 variable in snf_rollup2540_96_2011 dataset :

    a_c2_36 |      Freq.     Percent        Cum.
------------+-----------------------------------
        133 |          1        0.06        0.06
        901 |          1        0.06        0.11
       2358 |          1        0.06        0.17
       2381 |          1        0.06        0.22
      25431 |          1        0.06        0.28
     102354 |          1        0.06        0.33
          . |      1,803       99.67      100.00
------------+-----------------------------------
      Total |      1,809      100.00

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