Frequencies for first 10,000 rows of mplbir variable in natl1986 dataset :

   Mother's |
   Place of |
      Birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,094       70.94       70.94
          2 |         11        0.11       71.05
          3 |         14        0.14       71.19
          4 |         31        0.31       71.50
          5 |        111        1.11       72.61
          6 |         14        0.14       72.75
          7 |         17        0.17       72.92
          8 |          7        0.07       72.99
          9 |         12        0.12       73.11
         10 |        319        3.19       76.30
         11 |        323        3.23       79.53
         12 |          9        0.09       79.62
         13 |          3        0.03       79.65
         14 |        130        1.30       80.95
         15 |         86        0.86       81.81
         16 |         15        0.15       81.96
         17 |         14        0.14       82.10
         18 |         50        0.50       82.60
         19 |         69        0.69       83.29
         20 |          5        0.05       83.34
         21 |         24        0.24       83.58
         22 |         24        0.24       83.82
         23 |        147        1.47       85.29
         24 |         11        0.11       85.40
         25 |        158        1.58       86.98
         26 |         64        0.64       87.62
         27 |          3        0.03       87.65
         28 |         14        0.14       87.79
         29 |          4        0.04       87.83
         31 |         40        0.40       88.23
         32 |         14        0.14       88.37
         33 |        134        1.34       89.71
         34 |         58        0.58       90.29
         35 |          8        0.08       90.37
         36 |        116        1.16       91.53
         37 |         27        0.27       91.80
         38 |          7        0.07       91.87
         39 |         61        0.61       92.48
         40 |          5        0.05       92.53
         41 |         47        0.47       93.00
         42 |          6        0.06       93.06
         43 |        199        1.99       95.05
         44 |        122        1.22       96.27
         45 |          2        0.02       96.29
         46 |          3        0.03       96.32
         47 |         67        0.67       96.99
         48 |         18        0.18       97.17
         49 |         12        0.12       97.29
         50 |         25        0.25       97.54
         51 |          3        0.03       97.57
         52 |          6        0.06       97.63
         53 |          2        0.02       97.65
         54 |          1        0.01       97.66
         55 |          2        0.02       97.68
         56 |          1        0.01       97.69
         57 |          3        0.03       97.72
         59 |        221        2.21       99.93
         99 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016