Frequencies for first 10,000 rows of mplbir variable in natlterr1998 dataset :

   Place of |
   Birth of |
     Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          2        0.02        0.02
          4 |          1        0.01        0.03
          5 |         12        0.12        0.15
          6 |          2        0.02        0.17
          7 |         68        0.68        0.85
          8 |          3        0.03        0.88
          9 |          1        0.01        0.89
         10 |         15        0.15        1.04
         11 |          4        0.04        1.08
         12 |          2        0.02        1.10
         14 |        110        1.10        2.20
         15 |          4        0.04        2.24
         17 |          1        0.01        2.25
         18 |          3        0.03        2.28
         19 |          3        0.03        2.31
         21 |          3        0.03        2.34
         22 |         54        0.54        2.88
         23 |          6        0.06        2.94
         24 |          2        0.02        2.96
         26 |          3        0.03        2.99
         28 |          1        0.01        3.00
         31 |        179        1.79        4.79
         33 |        657        6.57       11.36
         34 |          1        0.01       11.37
         36 |         11        0.11       11.48
         37 |          1        0.01       11.49
         39 |         58        0.58       12.07
         40 |          3        0.03       12.10
         41 |          3        0.03       12.13
         43 |          1        0.01       12.14
         44 |         12        0.12       12.26
         50 |          5        0.05       12.31
         52 |      8,387       83.87       96.18
         53 |          8        0.08       96.26
         56 |         18        0.18       96.44
         57 |          9        0.09       96.53
         59 |        347        3.47      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015