Frequencies for first 10,000 rows of sbunit_cnt variable in pos2017 dataset :

    Subunit |
      Count |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        983        9.83        9.83
          1 |          9        0.09        9.92
          2 |          2        0.02        9.94
          4 |          2        0.02        9.96
         74 |          1        0.01        9.97
          . |      9,003       90.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 9 Jan 2018