Frequencies for first 10,000 rows of mplbir variable in natl1998 dataset :

   Place of |
   Birth of |
     Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,966       69.66       69.66
          2 |          6        0.06       69.72
          3 |         18        0.18       69.90
          4 |         29        0.29       70.19
          5 |        132        1.32       71.51
          6 |         17        0.17       71.68
          7 |         14        0.14       71.82
          8 |          4        0.04       71.86
          9 |         12        0.12       71.98
         10 |        306        3.06       75.04
         11 |        298        2.98       78.02
         12 |         15        0.15       78.17
         13 |          1        0.01       78.18
         14 |        120        1.20       79.38
         15 |         61        0.61       79.99
         16 |         11        0.11       80.10
         17 |         19        0.19       80.29
         18 |         55        0.55       80.84
         19 |         90        0.90       81.74
         20 |          6        0.06       81.80
         21 |         29        0.29       82.09
         22 |         33        0.33       82.42
         23 |        121        1.21       83.63
         24 |         11        0.11       83.74
         25 |        221        2.21       85.95
         26 |         37        0.37       86.32
         27 |          4        0.04       86.36
         28 |          5        0.05       86.41
         29 |          5        0.05       86.46
         30 |          1        0.01       86.47
         31 |         51        0.51       86.98
         32 |          6        0.06       87.04
         33 |        119        1.19       88.23
         34 |         65        0.65       88.88
         35 |          4        0.04       88.92
         36 |        141        1.41       90.33
         37 |         30        0.30       90.63
         38 |          5        0.05       90.68
         39 |         44        0.44       91.12
         40 |          4        0.04       91.16
         41 |         51        0.51       91.67
         42 |          4        0.04       91.71
         43 |        174        1.74       93.45
         44 |        128        1.28       94.73
         45 |          4        0.04       94.77
         46 |          2        0.02       94.79
         47 |         72        0.72       95.51
         48 |         15        0.15       95.66
         49 |         20        0.20       95.86
         50 |         24        0.24       96.10
         51 |          3        0.03       96.13
         52 |          5        0.05       96.18
         54 |          1        0.01       96.19
         55 |          8        0.08       96.27
         57 |        104        1.04       97.31
         59 |        266        2.66       99.97
         99 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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