Frequencies for versionnum variable in network2016 dataset :

    Version |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         58        4.15        4.15
          2 |        152       10.88       15.03
          3 |        231       16.54       31.57
          4 |        142       10.16       41.73
          5 |        164       11.74       53.47
          6 |        125        8.95       62.42
          7 |        134        9.59       72.01
          8 |         84        6.01       78.02
          9 |         74        5.30       83.32
         10 |         67        4.80       88.12
         11 |         49        3.51       91.62
         12 |         40        2.86       94.49
         13 |         19        1.36       95.85
         14 |         13        0.93       96.78
         15 |          7        0.50       97.28
         16 |          4        0.29       97.57
         17 |         22        1.57       99.14
         27 |          8        0.57       99.71
         29 |          4        0.29      100.00
------------+-----------------------------------
      Total |      1,397      100.00

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