Frequencies for first 10,000 rows of mplbir variable in natl1993 dataset :

   Place of |
   Birth of |
     Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,048       70.48       70.48
          2 |         13        0.13       70.61
          3 |         12        0.12       70.73
          4 |         35        0.35       71.08
          5 |        127        1.27       72.35
          6 |         15        0.15       72.50
          7 |         20        0.20       72.70
          8 |          9        0.09       72.79
          9 |         13        0.13       72.92
         10 |        297        2.97       75.89
         11 |        341        3.41       79.30
         12 |          6        0.06       79.36
         13 |          4        0.04       79.40
         14 |        148        1.48       80.88
         15 |         63        0.63       81.51
         16 |         13        0.13       81.64
         17 |         15        0.15       81.79
         18 |         51        0.51       82.30
         19 |         95        0.95       83.25
         20 |         12        0.12       83.37
         21 |         28        0.28       83.65
         22 |         26        0.26       83.91
         23 |        136        1.36       85.27
         24 |          4        0.04       85.31
         25 |        202        2.02       87.33
         26 |         43        0.43       87.76
         27 |          6        0.06       87.82
         28 |         14        0.14       87.96
         29 |          1        0.01       87.97
         30 |          3        0.03       88.00
         31 |         49        0.49       88.49
         32 |         13        0.13       88.62
         33 |        134        1.34       89.96
         34 |         49        0.49       90.45
         35 |          7        0.07       90.52
         36 |        132        1.32       91.84
         37 |         25        0.25       92.09
         38 |          6        0.06       92.15
         39 |         47        0.47       92.62
         40 |          5        0.05       92.67
         41 |         49        0.49       93.16
         42 |          5        0.05       93.21
         43 |        188        1.88       95.09
         44 |        126        1.26       96.35
         45 |         12        0.12       96.47
         47 |         55        0.55       97.02
         48 |         27        0.27       97.29
         49 |         20        0.20       97.49
         50 |         23        0.23       97.72
         51 |          1        0.01       97.73
         52 |          2        0.02       97.75
         53 |          2        0.02       97.77
         54 |          4        0.04       97.81
         55 |          2        0.02       97.83
         56 |          1        0.01       97.84
         57 |         17        0.17       98.01
         59 |        198        1.98       99.99
         99 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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