Frequencies for first 10,000 rows of mager variable in natlterr2014 dataset :

   Mother's |
     Single |
   Years of |
Age 12 10 - |
   12 years |      Freq.     Percent        Cum.
------------+-----------------------------------
         14 |          5        0.05        0.05
         15 |         37        0.37        0.42
         16 |        109        1.09        1.51
         17 |        200        2.00        3.51
         18 |        338        3.38        6.89
         19 |        496        4.96       11.85
         20 |        566        5.66       17.51
         21 |        631        6.31       23.82
         22 |        608        6.08       29.90
         23 |        639        6.39       36.29
         24 |        595        5.95       42.24
         25 |        588        5.88       48.12
         26 |        493        4.93       53.05
         27 |        525        5.25       58.30
         28 |        447        4.47       62.77
         29 |        442        4.42       67.19
         30 |        431        4.31       71.50
         31 |        442        4.42       75.92
         32 |        403        4.03       79.95
         33 |        335        3.35       83.30
         34 |        325        3.25       86.55
         35 |        303        3.03       89.58
         36 |        237        2.37       91.95
         37 |        205        2.05       94.00
         38 |        181        1.81       95.81
         39 |        134        1.34       97.15
         40 |        105        1.05       98.20
         41 |         63        0.63       98.83
         42 |         44        0.44       99.27
         43 |         43        0.43       99.70
         44 |         16        0.16       99.86
         45 |          9        0.09       99.95
         46 |          4        0.04       99.99
         48 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Jun 2016