Frequencies for first 10,000 rows of chow_cnt variable in pos2018 dataset :

 CHOW Count |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,474       64.74       64.74
          1 |      1,439       14.39       79.13
          2 |        926        9.26       88.39
          3 |        397        3.97       92.36
          4 |        309        3.09       95.45
          5 |        197        1.97       97.42
          6 |        109        1.09       98.51
          7 |         67        0.67       99.18
          8 |         33        0.33       99.51
          9 |         17        0.17       99.68
         10 |         12        0.12       99.80
         11 |         10        0.10       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 , 15 Feb 2019