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

 CHOW Count |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,455       64.55       64.55
          1 |      1,456       14.56       79.11
          2 |        932        9.32       88.43
          3 |        402        4.02       92.45
          4 |        308        3.08       95.53
          5 |        189        1.89       97.42
          6 |        111        1.11       98.53
          7 |         65        0.65       99.18
          8 |         35        0.35       99.53
          9 |         15        0.15       99.68
         10 |         14        0.14       99.82
         11 |          8        0.08       99.90
         12 |          4        0.04       99.94
         13 |          3        0.03       99.97
         14 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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