Frequencies for first 10,000 rows of mplbir variable in natl1992 dataset :

   Place of |
   Birth of |
     Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,959       69.59       69.59
          2 |          6        0.06       69.65
          3 |         15        0.15       69.80
          4 |         28        0.28       70.08
          5 |        139        1.39       71.47
          6 |         26        0.26       71.73
          7 |         18        0.18       71.91
          8 |         12        0.12       72.03
          9 |         11        0.11       72.14
         10 |        293        2.93       75.07
         11 |        302        3.02       78.09
         12 |         11        0.11       78.20
         13 |          3        0.03       78.23
         14 |        150        1.50       79.73
         15 |         83        0.83       80.56
         16 |         20        0.20       80.76
         17 |         24        0.24       81.00
         18 |         49        0.49       81.49
         19 |         89        0.89       82.38
         20 |          2        0.02       82.40
         21 |         27        0.27       82.67
         22 |         27        0.27       82.94
         23 |        129        1.29       84.23
         24 |         11        0.11       84.34
         25 |        221        2.21       86.55
         26 |         37        0.37       86.92
         27 |          4        0.04       86.96
         28 |         12        0.12       87.08
         29 |          3        0.03       87.11
         30 |          4        0.04       87.15
         31 |         32        0.32       87.47
         32 |          8        0.08       87.55
         33 |        158        1.58       89.13
         34 |         70        0.70       89.83
         35 |          7        0.07       89.90
         36 |        136        1.36       91.26
         37 |         25        0.25       91.51
         38 |          5        0.05       91.56
         39 |         57        0.57       92.13
         40 |          6        0.06       92.19
         41 |         42        0.42       92.61
         42 |          5        0.05       92.66
         43 |        212        2.12       94.78
         44 |        135        1.35       96.13
         45 |          4        0.04       96.17
         47 |         69        0.69       96.86
         48 |         21        0.21       97.07
         49 |         17        0.17       97.24
         50 |         25        0.25       97.49
         51 |          5        0.05       97.54
         52 |          5        0.05       97.59
         53 |          1        0.01       97.60
         54 |          1        0.01       97.61
         55 |          6        0.06       97.67
         57 |         15        0.15       97.82
         59 |        214        2.14       99.96
         99 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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