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

        age |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         49        0.49        0.49
          1 |         58        0.58        1.07
          2 |         50        0.50        1.57
          3 |         60        0.60        2.17
          4 |         55        0.55        2.72
          5 |         53        0.53        3.25
          6 |         34        0.34        3.59
          7 |         42        0.42        4.01
          8 |         65        0.65        4.66
          9 |         50        0.50        5.16
         10 |         44        0.44        5.60
         11 |         50        0.50        6.10
         12 |         55        0.55        6.65
         13 |         59        0.59        7.24
         14 |        102        1.02        8.26
         15 |        135        1.35        9.61
         16 |        210        2.10       11.71
         17 |        245        2.45       14.16
         18 |        320        3.20       17.36
         19 |        319        3.19       20.55
         20 |        312        3.12       23.67
         21 |        297        2.97       26.64
         22 |        287        2.87       29.51
         23 |        261        2.61       32.12
         24 |        253        2.53       34.65
         25 |        197        1.97       36.62
         26 |        206        2.06       38.68
         27 |        207        2.07       40.75
         28 |        180        1.80       42.55
         29 |        184        1.84       44.39
         30 |        166        1.66       46.05
         31 |        121        1.21       47.26
         32 |        128        1.28       48.54
         33 |        154        1.54       50.08
         34 |        132        1.32       51.40
         35 |        165        1.65       53.05
         36 |        129        1.29       54.34
         37 |        154        1.54       55.88
         38 |        160        1.60       57.48
         39 |        127        1.27       58.75
         40 |        147        1.47       60.22
         41 |        122        1.22       61.44
         42 |        138        1.38       62.82
         43 |        148        1.48       64.30
         44 |        139        1.39       65.69
         45 |        145        1.45       67.14
         46 |        140        1.40       68.54
         47 |        136        1.36       69.90
         48 |        132        1.32       71.22
         49 |        129        1.29       72.51
         50 |        141        1.41       73.92
         51 |        134        1.34       75.26
         52 |        114        1.14       76.40
         53 |        114        1.14       77.54
         54 |        106        1.06       78.60
         55 |         97        0.97       79.57
         56 |         94        0.94       80.51
         57 |         98        0.98       81.49
         58 |        105        1.05       82.54
         59 |         96        0.96       83.50
         60 |         92        0.92       84.42
         61 |         76        0.76       85.18
         62 |         61        0.61       85.79
         63 |         64        0.64       86.43
         64 |         68        0.68       87.11
         65 |         56        0.56       87.67
         66 |         49        0.49       88.16
         67 |         44        0.44       88.60
         68 |         44        0.44       89.04
         69 |         34        0.34       89.38
         70 |         44        0.44       89.82
         71 |         49        0.49       90.31
         72 |         36        0.36       90.67
         73 |         51        0.51       91.18
         74 |         45        0.45       91.63
         75 |         32        0.32       91.95
         76 |         32        0.32       92.27
         77 |         37        0.37       92.64
         78 |         38        0.38       93.02
         79 |         41        0.41       93.43
         80 |         34        0.34       93.77
         81 |         29        0.29       94.06
         82 |         34        0.34       94.40
         83 |         20        0.20       94.60
         84 |         22        0.22       94.82
         85 |         40        0.40       95.22
         86 |         18        0.18       95.40
         87 |         19        0.19       95.59
         88 |         18        0.18       95.77
         89 |         10        0.10       95.87
         90 |         13        0.13       96.00
         91 |          6        0.06       96.06
         92 |          6        0.06       96.12
         93 |          2        0.02       96.14
         94 |          4        0.04       96.18
         95 |          1        0.01       96.19
         99 |        381        3.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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