Frequencies for first 10,000 rows of pct020i025 variable in sf12010860us38 dataset :

   Military |
ships (602) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,989       99.89       99.89
         16 |          1        0.01       99.90
         24 |          1        0.01       99.91
         44 |          1        0.01       99.92
         60 |          1        0.01       99.93
        135 |          1        0.01       99.94
        155 |          1        0.01       99.95
        202 |          1        0.01       99.96
        362 |          1        0.01       99.97
        757 |          1        0.01       99.98
        765 |          1        0.01       99.99
      10412 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Apr 2017