Frequencies for rollupcount variable in count2540_96 dataset :

     Rollup |
      Count |      Freq.     Percent        Cum.
------------+-----------------------------------
        129 |          1        5.56        5.56
     158369 |          1        5.56       11.11
     220377 |          1        5.56       16.67
    1295643 |          1        5.56       22.22
    1562482 |          1        5.56       27.78
    1565945 |          1        5.56       33.33
    1566685 |          1        5.56       38.89
    1586701 |          1        5.56       44.44
    1601155 |          1        5.56       50.00
    1616506 |          1        5.56       55.56
    1617430 |          1        5.56       61.11
    1658417 |          1        5.56       66.67
    1662394 |          1        5.56       72.22
    1678167 |          1        5.56       77.78
    1711356 |          1        5.56       83.33
    1721878 |          1        5.56       88.89
    1735844 |          1        5.56       94.44
    1847499 |          1        5.56      100.00
------------+-----------------------------------
      Total |         18      100.00

by Jean Roth , jroth@nber.org , 17 Feb 2018