Frequencies for first 10,000 rows of mplbir variable in natl1983 dataset :

   Mother's |
   Place of |
      Birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,176       71.76       71.76
          2 |          6        0.06       71.82
          3 |         14        0.14       71.96
          4 |         35        0.35       72.31
          5 |        114        1.14       73.45
          6 |         13        0.13       73.58
          7 |         11        0.11       73.69
          8 |          3        0.03       73.72
          9 |         13        0.13       73.85
         10 |        324        3.24       77.09
         11 |        350        3.50       80.59
         12 |         11        0.11       80.70
         13 |          4        0.04       80.74
         14 |        137        1.37       82.11
         15 |         71        0.71       82.82
         16 |         16        0.16       82.98
         17 |         24        0.24       83.22
         18 |         60        0.60       83.82
         19 |         68        0.68       84.50
         20 |          8        0.08       84.58
         21 |         32        0.32       84.90
         22 |         26        0.26       85.16
         23 |         99        0.99       86.15
         24 |         11        0.11       86.26
         25 |        188        1.88       88.14
         26 |         36        0.36       88.50
         27 |          5        0.05       88.55
         28 |          8        0.08       88.63
         29 |          3        0.03       88.66
         30 |          4        0.04       88.70
         31 |         44        0.44       89.14
         32 |         19        0.19       89.33
         33 |         98        0.98       90.31
         34 |         67        0.67       90.98
         35 |          4        0.04       91.02
         36 |        126        1.26       92.28
         37 |         25        0.25       92.53
         38 |          7        0.07       92.60
         39 |         58        0.58       93.18
         40 |          4        0.04       93.22
         41 |         42        0.42       93.64
         42 |          3        0.03       93.67
         43 |        211        2.11       95.78
         44 |        112        1.12       96.90
         45 |         10        0.10       97.00
         46 |          1        0.01       97.01
         47 |         64        0.64       97.65
         48 |          8        0.08       97.73
         49 |         12        0.12       97.85
         50 |         24        0.24       98.09
         51 |          3        0.03       98.12
         52 |          7        0.07       98.19
         54 |          1        0.01       98.20
         55 |          3        0.03       98.23
         57 |          2        0.02       98.25
         59 |        172        1.72       99.97
         99 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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