Frequencies for first 10,000 rows of mplbir variable in natl1997 dataset :

   Place of |
   Birth of |
     Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,891       68.91       68.91
          2 |          7        0.07       68.98
          3 |         14        0.14       69.12
          4 |         28        0.28       69.40
          5 |        122        1.22       70.62
          6 |         23        0.23       70.85
          7 |         25        0.25       71.10
          8 |          7        0.07       71.17
          9 |          5        0.05       71.22
         10 |        336        3.36       74.58
         11 |        283        2.83       77.41
         12 |         12        0.12       77.53
         13 |          2        0.02       77.55
         14 |        146        1.46       79.01
         15 |         67        0.67       79.68
         16 |         10        0.10       79.78
         17 |         26        0.26       80.04
         18 |         40        0.40       80.44
         19 |        126        1.26       81.70
         20 |          6        0.06       81.76
         21 |         22        0.22       81.98
         22 |         31        0.31       82.29
         23 |        117        1.17       83.46
         24 |         12        0.12       83.58
         25 |        234        2.34       85.92
         26 |         45        0.45       86.37
         27 |          3        0.03       86.40
         28 |         10        0.10       86.50
         29 |          6        0.06       86.56
         30 |          1        0.01       86.57
         31 |         44        0.44       87.01
         32 |         18        0.18       87.19
         33 |        130        1.30       88.49
         34 |         75        0.75       89.24
         35 |          3        0.03       89.27
         36 |        125        1.25       90.52
         37 |         30        0.30       90.82
         38 |          4        0.04       90.86
         39 |         55        0.55       91.41
         40 |          7        0.07       91.48
         41 |         40        0.40       91.88
         42 |          4        0.04       91.92
         43 |        167        1.67       93.59
         44 |        149        1.49       95.08
         45 |          5        0.05       95.13
         46 |          2        0.02       95.15
         47 |         56        0.56       95.71
         48 |         12        0.12       95.83
         49 |         22        0.22       96.05
         50 |         14        0.14       96.19
         51 |          6        0.06       96.25
         52 |         12        0.12       96.37
         53 |          3        0.03       96.40
         54 |          2        0.02       96.42
         55 |         10        0.10       96.52
         56 |          3        0.03       96.55
         57 |         81        0.81       97.36
         59 |        258        2.58       99.94
         99 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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