Frequencies for first 10,000 rows of ager variable in namcs2011 dataset :

       Age recode |      Freq.     Percent        Cum.
------------------+-----------------------------------
   Under 15 years |      2,720       27.20       27.20
      15-24 years |        822        8.22       35.42
      25-44 years |      1,724       17.24       52.66
      45-64 years |      2,679       26.79       79.45
      65-74 years |      1,059       10.59       90.04
75 years and over |        996        9.96      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016