Frequencies for first 10,000 rows of versionnum variable in servarea2016 dataset :

    Version |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        220        2.20        2.20
          2 |        774        7.74        9.94
          3 |      1,041       10.41       20.35
          4 |        589        5.89       26.24
          5 |      1,064       10.64       36.88
          6 |        867        8.67       45.55
          7 |      1,583       15.83       61.38
          8 |      1,004       10.04       71.42
          9 |        606        6.06       77.48
         10 |        767        7.67       85.15
         11 |        355        3.55       88.70
         12 |        172        1.72       90.42
         13 |        108        1.08       91.50
         14 |          8        0.08       91.58
         15 |        312        3.12       94.70
         17 |        272        2.72       97.42
         27 |        258        2.58      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 9 Oct 2016