Frequencies for a_c1_11 variable in snf_rollup2540_96_2011 dataset :

    a_c1_11 |      Freq.     Percent        Cum.
------------+-----------------------------------
      10405 |          1        0.06        0.06
      27973 |          1        0.06        0.11
     131806 |          1        0.06        0.17
     173106 |          1        0.06        0.22
     208264 |          1        0.06        0.28
     268765 |          1        0.06        0.33
     270345 |          1        0.06        0.39
     484836 |          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