Frequencies for first 10,000 rows of sbunit_cnt variable in pos2013 dataset :

    Subunit |
      Count |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,359       13.59       13.59
          1 |         12        0.12       13.71
          2 |          4        0.04       13.75
          4 |          2        0.02       13.77
         74 |          1        0.01       13.78
          . |      8,622       86.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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