Frequencies for versionnum variable in servarea2014 dataset :

    Version |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        161        1.81        1.81
          2 |        314        3.54        5.35
          3 |        334        3.76        9.12
          4 |      1,247       14.05       23.17
          5 |        881        9.93       33.10
          6 |      1,117       12.59       45.68
          7 |      1,371       15.45       61.13
          8 |      1,433       16.15       77.28
          9 |        965       10.87       88.16
         10 |        607        6.84       95.00
         11 |        266        3.00       97.99
         12 |         64        0.72       98.72
         13 |          1        0.01       98.73
         14 |         28        0.32       99.04
         16 |         85        0.96      100.00
------------+-----------------------------------
      Total |      8,874      100.00

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