Frequencies for first 10,000 rows of mplbir variable in natl1994 dataset :

   Place of |
   Birth of |
     Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,948       69.48       69.48
          2 |         13        0.13       69.61
          3 |         14        0.14       69.75
          4 |         33        0.33       70.08
          5 |        133        1.33       71.41
          6 |         22        0.22       71.63
          7 |         14        0.14       71.77
          8 |          3        0.03       71.80
          9 |         13        0.13       71.93
         10 |        289        2.89       74.82
         11 |        322        3.22       78.04
         12 |          8        0.08       78.12
         13 |          8        0.08       78.20
         14 |        170        1.70       79.90
         15 |         79        0.79       80.69
         16 |         17        0.17       80.86
         17 |         15        0.15       81.01
         18 |         64        0.64       81.65
         19 |         94        0.94       82.59
         20 |         15        0.15       82.74
         21 |         31        0.31       83.05
         22 |         35        0.35       83.40
         23 |        129        1.29       84.69
         24 |          9        0.09       84.78
         25 |        202        2.02       86.80
         26 |         45        0.45       87.25
         27 |         12        0.12       87.37
         28 |         12        0.12       87.49
         29 |          8        0.08       87.57
         30 |          5        0.05       87.62
         31 |         58        0.58       88.20
         32 |         10        0.10       88.30
         33 |        106        1.06       89.36
         34 |         68        0.68       90.04
         35 |          6        0.06       90.10
         36 |        109        1.09       91.19
         37 |         30        0.30       91.49
         38 |          5        0.05       91.54
         39 |         58        0.58       92.12
         40 |          4        0.04       92.16
         41 |         53        0.53       92.69
         42 |          1        0.01       92.70
         43 |        186        1.86       94.56
         44 |        129        1.29       95.85
         45 |          8        0.08       95.93
         46 |          1        0.01       95.94
         47 |         58        0.58       96.52
         48 |         13        0.13       96.65
         49 |         18        0.18       96.83
         50 |         25        0.25       97.08
         51 |          1        0.01       97.09
         52 |         10        0.10       97.19
         53 |          1        0.01       97.20
         54 |          1        0.01       97.21
         55 |         12        0.12       97.33
         57 |         28        0.28       97.61
         59 |        235        2.35       99.96
         99 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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