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

        age |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         38        0.38        0.38
          1 |         51        0.51        0.89
          2 |         65        0.65        1.54
          3 |         56        0.56        2.10
          4 |         56        0.56        2.66
          5 |         56        0.56        3.22
          6 |         47        0.47        3.69
          7 |         53        0.53        4.22
          8 |         59        0.59        4.81
          9 |         54        0.54        5.35
         10 |         54        0.54        5.89
         11 |         34        0.34        6.23
         12 |         53        0.53        6.76
         13 |         55        0.55        7.31
         14 |         91        0.91        8.22
         15 |        148        1.48        9.70
         16 |        238        2.38       12.08
         17 |        301        3.01       15.09
         18 |        341        3.41       18.50
         19 |        341        3.41       21.91
         20 |        298        2.98       24.89
         21 |        248        2.48       27.37
         22 |        279        2.79       30.16
         23 |        222        2.22       32.38
         24 |        219        2.19       34.57
         25 |        220        2.20       36.77
         26 |        238        2.38       39.15
         27 |        177        1.77       40.92
         28 |        175        1.75       42.67
         29 |        171        1.71       44.38
         30 |        170        1.70       46.08
         31 |        168        1.68       47.76
         32 |        136        1.36       49.12
         33 |        132        1.32       50.44
         34 |        169        1.69       52.13
         35 |        142        1.42       53.55
         36 |        149        1.49       55.04
         37 |        134        1.34       56.38
         38 |        123        1.23       57.61
         39 |        152        1.52       59.13
         40 |        154        1.54       60.67
         41 |        155        1.55       62.22
         42 |        158        1.58       63.80
         43 |        131        1.31       65.11
         44 |        151        1.51       66.62
         45 |        150        1.50       68.12
         46 |        127        1.27       69.39
         47 |        139        1.39       70.78
         48 |        145        1.45       72.23
         49 |        145        1.45       73.68
         50 |        113        1.13       74.81
         51 |        125        1.25       76.06
         52 |        111        1.11       77.17
         53 |        101        1.01       78.18
         54 |        107        1.07       79.25
         55 |        124        1.24       80.49
         56 |         80        0.80       81.29
         57 |         98        0.98       82.27
         58 |         98        0.98       83.25
         59 |         98        0.98       84.23
         60 |         79        0.79       85.02
         61 |         70        0.70       85.72
         62 |         73        0.73       86.45
         63 |         58        0.58       87.03
         64 |         56        0.56       87.59
         65 |         64        0.64       88.23
         66 |         30        0.30       88.53
         67 |         48        0.48       89.01
         68 |         34        0.34       89.35
         69 |         50        0.50       89.85
         70 |         34        0.34       90.19
         71 |         50        0.50       90.69
         72 |         31        0.31       91.00
         73 |         36        0.36       91.36
         74 |         33        0.33       91.69
         75 |         29        0.29       91.98
         76 |         46        0.46       92.44
         77 |         28        0.28       92.72
         78 |         34        0.34       93.06
         79 |         24        0.24       93.30
         80 |         35        0.35       93.65
         81 |         38        0.38       94.03
         82 |         38        0.38       94.41
         83 |         18        0.18       94.59
         84 |         19        0.19       94.78
         85 |         17        0.17       94.95
         86 |         20        0.20       95.15
         87 |         20        0.20       95.35
         88 |         10        0.10       95.45
         89 |         12        0.12       95.57
         90 |          8        0.08       95.65
         91 |          3        0.03       95.68
         92 |          5        0.05       95.73
         93 |          2        0.02       95.75
         94 |          1        0.01       95.76
         95 |          2        0.02       95.78
         96 |          1        0.01       95.79
         97 |          1        0.01       95.80
         99 |        420        4.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016