Frequencies for first 10,000 rows of age variable in rate2015 dataset :

          Age |      Freq.     Percent        Cum.
--------------+-----------------------------------
         0-20 |        220        2.20        2.20
           21 |        220        2.20        4.40
           22 |        220        2.20        6.60
           23 |        220        2.20        8.80
           24 |        220        2.20       11.00
           25 |        220        2.20       13.20
           26 |        220        2.20       15.40
           27 |        216        2.16       17.56
           28 |        216        2.16       19.72
           29 |        216        2.16       21.88
           30 |        216        2.16       24.04
           31 |        216        2.16       26.20
           32 |        216        2.16       28.36
           33 |        216        2.16       30.52
           34 |        216        2.16       32.68
           35 |        216        2.16       34.84
           36 |        216        2.16       37.00
           37 |        216        2.16       39.16
           38 |        216        2.16       41.32
           39 |        216        2.16       43.48
           40 |        216        2.16       45.64
           41 |        216        2.16       47.80
           42 |        216        2.16       49.96
           43 |        216        2.16       52.12
           44 |        216        2.16       54.28
           45 |        216        2.16       56.44
           46 |        216        2.16       58.60
           47 |        216        2.16       60.76
           48 |        216        2.16       62.92
           49 |        216        2.16       65.08
           50 |        216        2.16       67.24
           51 |        216        2.16       69.40
           52 |        216        2.16       71.56
           53 |        216        2.16       73.72
           54 |        216        2.16       75.88
           55 |        216        2.16       78.04
           56 |        216        2.16       80.20
           57 |        216        2.16       82.36
           58 |        216        2.16       84.52
           59 |        216        2.16       86.68
           60 |        216        2.16       88.84
           61 |        216        2.16       91.00
           62 |        216        2.16       93.16
           63 |        216        2.16       95.32
           64 |        216        2.16       97.48
  65 and over |        216        2.16       99.64
Family Option |         36        0.36      100.00
--------------+-----------------------------------
        Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 9 Dec 2017