Frequencies for first 10,000 rows of mplbir variable in natl1979 dataset :

   Mother's |
   Place of |
      Birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,582       75.82       75.82
          2 |          6        0.06       75.88
          3 |          9        0.09       75.97
          4 |         31        0.31       76.28
          5 |         81        0.81       77.09
          6 |          5        0.05       77.14
          7 |          5        0.05       77.19
          8 |          6        0.06       77.25
          9 |         14        0.14       77.39
         10 |        299        2.99       80.38
         11 |        274        2.74       83.12
         12 |          8        0.08       83.20
         13 |          1        0.01       83.21
         14 |         89        0.89       84.10
         15 |         71        0.71       84.81
         16 |          5        0.05       84.86
         17 |         23        0.23       85.09
         18 |         49        0.49       85.58
         19 |         54        0.54       86.12
         20 |         12        0.12       86.24
         21 |         16        0.16       86.40
         22 |         25        0.25       86.65
         23 |         74        0.74       87.39
         24 |         10        0.10       87.49
         25 |        169        1.69       89.18
         26 |         35        0.35       89.53
         27 |          6        0.06       89.59
         28 |          7        0.07       89.66
         29 |          1        0.01       89.67
         30 |          4        0.04       89.71
         31 |         28        0.28       89.99
         32 |          8        0.08       90.07
         33 |         84        0.84       90.91
         34 |         50        0.50       91.41
         35 |          3        0.03       91.44
         36 |        105        1.05       92.49
         37 |         18        0.18       92.67
         38 |          8        0.08       92.75
         39 |         44        0.44       93.19
         40 |          4        0.04       93.23
         41 |         30        0.30       93.53
         42 |          4        0.04       93.57
         43 |        208        2.08       95.65
         44 |        120        1.20       96.85
         45 |          7        0.07       96.92
         46 |          1        0.01       96.93
         47 |         55        0.55       97.48
         48 |         16        0.16       97.64
         49 |         25        0.25       97.89
         50 |         23        0.23       98.12
         51 |          5        0.05       98.17
         52 |          3        0.03       98.20
         54 |          1        0.01       98.21
         55 |          6        0.06       98.27
         56 |          1        0.01       98.28
         57 |          5        0.05       98.33
         59 |        164        1.64       99.97
         99 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016