Frequencies for first 10,000 rows of versionnum variable in rate2016 dataset :

    Version |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        552        5.52        5.52
          2 |        714        7.14       12.66
          4 |      1,778       17.78       30.44
          6 |      6,818       68.18       98.62
         10 |        138        1.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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