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

        age |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         55        0.55        0.55
          1 |         62        0.62        1.17
          2 |         73        0.73        1.90
          3 |         74        0.74        2.64
          4 |         79        0.79        3.43
          5 |         70        0.70        4.13
          6 |         71        0.71        4.84
          7 |         71        0.71        5.55
          8 |         64        0.64        6.19
          9 |         61        0.61        6.80
         10 |         62        0.62        7.42
         11 |         66        0.66        8.08
         12 |         62        0.62        8.70
         13 |         70        0.70        9.40
         14 |         97        0.97       10.37
         15 |        175        1.75       12.12
         16 |        251        2.51       14.63
         17 |        295        2.95       17.58
         18 |        305        3.05       20.63
         19 |        318        3.18       23.81
         20 |        298        2.98       26.79
         21 |        285        2.85       29.64
         22 |        255        2.55       32.19
         23 |        216        2.16       34.35
         24 |        226        2.26       36.61
         25 |        231        2.31       38.92
         26 |        210        2.10       41.02
         27 |        170        1.70       42.72
         28 |        170        1.70       44.42
         29 |        178        1.78       46.20
         30 |        150        1.50       47.70
         31 |        193        1.93       49.63
         32 |        187        1.87       51.50
         33 |        187        1.87       53.37
         34 |        175        1.75       55.12
         35 |        173        1.73       56.85
         36 |        165        1.65       58.50
         37 |        170        1.70       60.20
         38 |        164        1.64       61.84
         39 |        135        1.35       63.19
         40 |        161        1.61       64.80
         41 |        143        1.43       66.23
         42 |        141        1.41       67.64
         43 |        131        1.31       68.95
         44 |        108        1.08       70.03
         45 |        125        1.25       71.28
         46 |        120        1.20       72.48
         47 |        118        1.18       73.66
         48 |        106        1.06       74.72
         49 |        109        1.09       75.81
         50 |         71        0.71       76.52
         51 |         91        0.91       77.43
         52 |         79        0.79       78.22
         53 |         71        0.71       78.93
         54 |         73        0.73       79.66
         55 |         79        0.79       80.45
         56 |         75        0.75       81.20
         57 |         59        0.59       81.79
         58 |         59        0.59       82.38
         59 |         63        0.63       83.01
         60 |         52        0.52       83.53
         61 |         71        0.71       84.24
         62 |         49        0.49       84.73
         63 |         61        0.61       85.34
         64 |         52        0.52       85.86
         65 |         43        0.43       86.29
         66 |         49        0.49       86.78
         67 |         52        0.52       87.30
         68 |         46        0.46       87.76
         69 |         61        0.61       88.37
         70 |         66        0.66       89.03
         71 |         53        0.53       89.56
         72 |         42        0.42       89.98
         73 |         60        0.60       90.58
         74 |         54        0.54       91.12
         75 |         49        0.49       91.61
         76 |         53        0.53       92.14
         77 |         45        0.45       92.59
         78 |         39        0.39       92.98
         79 |         41        0.41       93.39
         80 |         31        0.31       93.70
         81 |         35        0.35       94.05
         82 |         25        0.25       94.30
         83 |         36        0.36       94.66
         84 |         22        0.22       94.88
         85 |         20        0.20       95.08
         86 |         18        0.18       95.26
         87 |          8        0.08       95.34
         88 |         15        0.15       95.49
         89 |         10        0.10       95.59
         90 |          7        0.07       95.66
         91 |          4        0.04       95.70
         92 |          5        0.05       95.75
         93 |          5        0.05       95.80
         94 |          2        0.02       95.82
         95 |          1        0.01       95.83
         99 |        417        4.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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