Frequencies for first 10,000 rows of pct0210059 variable in sf12010860us19 dataset :

   Military |
ships (602) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,989       99.89       99.89
         25 |          1        0.01       99.90
         28 |          1        0.01       99.91
         44 |          1        0.01       99.92
         76 |          1        0.01       99.93
        170 |          1        0.01       99.94
        199 |          1        0.01       99.95
        227 |          1        0.01       99.96
        450 |          1        0.01       99.97
        974 |          1        0.01       99.98
       1151 |          1        0.01       99.99
      16350 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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