Frequencies for first 10,000 rows of mplbir variable in natl2002 dataset :

   Place of |
   Birth of |
     Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        164        1.64        1.64
          2 |      3,745       37.45       39.09
          3 |        110        1.10       40.19
          4 |         48        0.48       40.67
          5 |        662        6.62       47.29
          6 |        142        1.42       48.71
          7 |         25        0.25       48.96
          8 |          8        0.08       49.04
          9 |         14        0.14       49.18
         10 |        166        1.66       50.84
         11 |         87        0.87       51.71
         12 |         76        0.76       52.47
         13 |        123        1.23       53.70
         14 |        139        1.39       55.09
         15 |         56        0.56       55.65
         16 |         44        0.44       56.09
         17 |         41        0.41       56.50
         18 |         38        0.38       56.88
         19 |         81        0.81       57.69
         20 |         29        0.29       57.98
         21 |         42        0.42       58.40
         22 |         58        0.58       58.98
         23 |        163        1.63       60.61
         24 |        151        1.51       62.12
         25 |         45        0.45       62.57
         26 |         64        0.64       63.21
         27 |        110        1.10       64.31
         28 |         44        0.44       64.75
         29 |         46        0.46       65.21
         30 |         28        0.28       65.49
         31 |         67        0.67       66.16
         32 |         49        0.49       66.65
         33 |        193        1.93       68.58
         34 |         75        0.75       69.33
         35 |         40        0.40       69.73
         36 |        142        1.42       71.15
         37 |         71        0.71       71.86
         38 |        311        3.11       74.97
         39 |        115        1.15       76.12
         40 |          9        0.09       76.21
         41 |         46        0.46       76.67
         42 |         41        0.41       77.08
         43 |         48        0.48       77.56
         44 |        299        2.99       80.55
         45 |        104        1.04       81.59
         46 |         18        0.18       81.77
         47 |         63        0.63       82.40
         48 |        500        5.00       87.40
         49 |         14        0.14       87.54
         50 |         94        0.94       88.48
         51 |         35        0.35       88.83
         52 |         17        0.17       89.00
         53 |          1        0.01       89.01
         54 |          9        0.09       89.10
         55 |         45        0.45       89.55
         57 |         85        0.85       90.40
         59 |        886        8.86       99.26
         99 |         74        0.74      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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