Frequencies for first 10,000 rows of versionnum variable in plan2016 dataset :

    Version |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        161        1.61        1.61
          2 |        381        3.81        5.42
          3 |        899        8.99       14.41
          4 |      1,216       12.16       26.57
          5 |        838        8.38       34.95
          6 |        918        9.18       44.13
          7 |      1,114       11.14       55.27
          8 |      1,482       14.82       70.09
          9 |        520        5.20       75.29
         10 |        984        9.84       85.13
         11 |        416        4.16       89.29
         12 |        603        6.03       95.32
         14 |         65        0.65       95.97
         15 |        133        1.33       97.30
         17 |        270        2.70      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 6 Oct 2016