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

        Age |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         40        0.40        0.40
          1 |         51        0.51        0.91
          2 |         56        0.56        1.47
          3 |         60        0.60        2.07
          4 |         47        0.47        2.54
          5 |         56        0.56        3.10
          6 |         62        0.62        3.72
          7 |         43        0.43        4.15
          8 |         49        0.49        4.64
          9 |         58        0.58        5.22
         10 |         53        0.53        5.75
         11 |         59        0.59        6.34
         12 |         54        0.54        6.88
         13 |         57        0.57        7.45
         14 |         90        0.90        8.35
         15 |        157        1.57        9.92
         16 |        299        2.99       12.91
         17 |        406        4.06       16.97
         18 |        444        4.44       21.41
         19 |        432        4.32       25.73
         20 |        413        4.13       29.86
         21 |        395        3.95       33.81
         22 |        327        3.27       37.08
         23 |        375        3.75       40.83
         24 |        328        3.28       44.11
         25 |        311        3.11       47.22
         26 |        282        2.82       50.04
         27 |        233        2.33       52.37
         28 |        267        2.67       55.04
         29 |        256        2.56       57.60
         30 |        205        2.05       59.65
         31 |        206        2.06       61.71
         32 |        174        1.74       63.45
         33 |        152        1.52       64.97
         34 |        182        1.82       66.79
         35 |        135        1.35       68.14
         36 |        134        1.34       69.48
         37 |        105        1.05       70.53
         38 |        130        1.30       71.83
         39 |         90        0.90       72.73
         40 |        103        1.03       73.76
         41 |         96        0.96       74.72
         42 |         71        0.71       75.43
         43 |         91        0.91       76.34
         44 |         88        0.88       77.22
         45 |         79        0.79       78.01
         46 |         88        0.88       78.89
         47 |         85        0.85       79.74
         48 |         71        0.71       80.45
         49 |         66        0.66       81.11
         50 |         87        0.87       81.98
         51 |         79        0.79       82.77
         52 |         68        0.68       83.45
         53 |         95        0.95       84.40
         54 |         59        0.59       84.99
         55 |         86        0.86       85.85
         56 |         69        0.69       86.54
         57 |         57        0.57       87.11
         58 |         71        0.71       87.82
         59 |         48        0.48       88.30
         60 |         72        0.72       89.02
         61 |         55        0.55       89.57
         62 |         49        0.49       90.06
         63 |         59        0.59       90.65
         64 |         44        0.44       91.09
         65 |         53        0.53       91.62
         66 |         52        0.52       92.14
         67 |         42        0.42       92.56
         68 |         51        0.51       93.07
         69 |         51        0.51       93.58
         70 |         62        0.62       94.20
         71 |         37        0.37       94.57
         72 |         37        0.37       94.94
         73 |         39        0.39       95.33
         74 |         32        0.32       95.65
         75 |         35        0.35       96.00
         76 |         40        0.40       96.40
         77 |         40        0.40       96.80
         78 |         31        0.31       97.11
         79 |         23        0.23       97.34
         80 |         23        0.23       97.57
         81 |         15        0.15       97.72
         82 |         22        0.22       97.94
         83 |         17        0.17       98.11
         84 |         16        0.16       98.27
         85 |         12        0.12       98.39
         86 |         12        0.12       98.51
         87 |          9        0.09       98.60
         88 |          2        0.02       98.62
         89 |          7        0.07       98.69
         90 |          3        0.03       98.72
         91 |          3        0.03       98.75
         92 |          3        0.03       98.78
         93 |          1        0.01       98.79
         94 |          1        0.01       98.80
         99 |        120        1.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016