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

        Age |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         53        0.53        0.53
          1 |         57        0.57        1.10
          2 |         83        0.83        1.93
          3 |         63        0.63        2.56
          4 |         65        0.65        3.21
          5 |         54        0.54        3.75
          6 |         60        0.60        4.35
          7 |         66        0.66        5.01
          8 |         71        0.71        5.72
          9 |         57        0.57        6.29
         10 |         75        0.75        7.04
         11 |         56        0.56        7.60
         12 |         54        0.54        8.14
         13 |         69        0.69        8.83
         14 |         97        0.97        9.80
         15 |        139        1.39       11.19
         16 |        202        2.02       13.21
         17 |        285        2.85       16.06
         18 |        363        3.63       19.69
         19 |        328        3.28       22.97
         20 |        315        3.15       26.12
         21 |        335        3.35       29.47
         22 |        293        2.93       32.40
         23 |        301        3.01       35.41
         24 |        273        2.73       38.14
         25 |        256        2.56       40.70
         26 |        243        2.43       43.13
         27 |        224        2.24       45.37
         28 |        246        2.46       47.83
         29 |        223        2.23       50.06
         30 |        214        2.14       52.20
         31 |        205        2.05       54.25
         32 |        204        2.04       56.29
         33 |        199        1.99       58.28
         34 |        174        1.74       60.02
         35 |        171        1.71       61.73
         36 |        164        1.64       63.37
         37 |        166        1.66       65.03
         38 |        126        1.26       66.29
         39 |        139        1.39       67.68
         40 |        122        1.22       68.90
         41 |        113        1.13       70.03
         42 |        142        1.42       71.45
         43 |        139        1.39       72.84
         44 |        106        1.06       73.90
         45 |         97        0.97       74.87
         46 |         97        0.97       75.84
         47 |         84        0.84       76.68
         48 |         89        0.89       77.57
         49 |         84        0.84       78.41
         50 |         68        0.68       79.09
         51 |         72        0.72       79.81
         52 |         59        0.59       80.40
         53 |         47        0.47       80.87
         54 |         53        0.53       81.40
         55 |         59        0.59       81.99
         56 |         60        0.60       82.59
         57 |         51        0.51       83.10
         58 |         59        0.59       83.69
         59 |         62        0.62       84.31
         60 |         67        0.67       84.98
         61 |         69        0.69       85.67
         62 |         52        0.52       86.19
         63 |         63        0.63       86.82
         64 |         69        0.69       87.51
         65 |         56        0.56       88.07
         66 |         53        0.53       88.60
         67 |         47        0.47       89.07
         68 |         45        0.45       89.52
         69 |         45        0.45       89.97
         70 |         35        0.35       90.32
         71 |         45        0.45       90.77
         72 |         39        0.39       91.16
         73 |         40        0.40       91.56
         74 |         37        0.37       91.93
         75 |         36        0.36       92.29
         76 |         43        0.43       92.72
         77 |         42        0.42       93.14
         78 |         27        0.27       93.41
         79 |         42        0.42       93.83
         80 |         35        0.35       94.18
         81 |         30        0.30       94.48
         82 |         23        0.23       94.71
         83 |         18        0.18       94.89
         84 |         25        0.25       95.14
         85 |         16        0.16       95.30
         86 |         12        0.12       95.42
         87 |         14        0.14       95.56
         88 |          5        0.05       95.61
         89 |          6        0.06       95.67
         90 |          5        0.05       95.72
         91 |          3        0.03       95.75
         92 |          2        0.02       95.77
         93 |          4        0.04       95.81
         94 |          3        0.03       95.84
         95 |          1        0.01       95.85
         96 |          1        0.01       95.86
         97 |          3        0.03       95.89
         99 |        411        4.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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