Frequencies for first 10,000 rows of mplbir variable in natl1991 dataset :

   Place of |
   Birth of |
     Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,035       70.35       70.35
          2 |          4        0.04       70.39
          3 |         14        0.14       70.53
          4 |         30        0.30       70.83
          5 |        124        1.24       72.07
          6 |         16        0.16       72.23
          7 |         26        0.26       72.49
          8 |          5        0.05       72.54
          9 |          9        0.09       72.63
         10 |        341        3.41       76.04
         11 |        335        3.35       79.39
         12 |         11        0.11       79.50
         13 |          4        0.04       79.54
         14 |        172        1.72       81.26
         15 |         94        0.94       82.20
         16 |         15        0.15       82.35
         17 |         19        0.19       82.54
         18 |         59        0.59       83.13
         19 |         90        0.90       84.03
         20 |          5        0.05       84.08
         21 |         18        0.18       84.26
         22 |         25        0.25       84.51
         23 |        135        1.35       85.86
         24 |         13        0.13       85.99
         25 |        145        1.45       87.44
         26 |         36        0.36       87.80
         27 |          4        0.04       87.84
         28 |         10        0.10       87.94
         29 |          4        0.04       87.98
         30 |          2        0.02       88.00
         31 |         45        0.45       88.45
         32 |         12        0.12       88.57
         33 |        127        1.27       89.84
         34 |         69        0.69       90.53
         35 |          7        0.07       90.60
         36 |        131        1.31       91.91
         37 |         21        0.21       92.12
         38 |          6        0.06       92.18
         39 |         59        0.59       92.77
         40 |          7        0.07       92.84
         41 |         42        0.42       93.26
         42 |          3        0.03       93.29
         43 |        198        1.98       95.27
         44 |        127        1.27       96.54
         45 |          8        0.08       96.62
         46 |          1        0.01       96.63
         47 |         51        0.51       97.14
         48 |         11        0.11       97.25
         49 |         20        0.20       97.45
         50 |         26        0.26       97.71
         51 |          1        0.01       97.72
         52 |          3        0.03       97.75
         54 |          1        0.01       97.76
         55 |          7        0.07       97.83
         56 |          3        0.03       97.86
         57 |          6        0.06       97.92
         59 |        203        2.03       99.95
         99 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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