Frequencies for first 10,000 rows of mager14 variable in natl2011 dataset :

   Mother's |
 Age Recode |
     14 U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          6        0.06        0.06
          3 |         17        0.17        0.23
          4 |         58        0.58        0.81
          5 |        104        1.04        1.85
          6 |        216        2.16        4.01
          7 |        382        3.82        7.83
          8 |      2,828       28.28       36.11
          9 |      3,023       30.23       66.34
         10 |      2,152       21.52       87.86
         11 |        976        9.76       97.62
         12 |        225        2.25       99.87
         13 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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