Frequencies for first 10,000 rows of pct020i025 variable in sf12010880us38 dataset :

   Military |
ships (602) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,991       99.91       99.91
         16 |          1        0.01       99.92
         44 |          1        0.01       99.93
         60 |          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 , 8 May 2017