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

        age |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         51        0.51        0.51
          1 |         70        0.70        1.21
          2 |         67        0.67        1.88
          3 |         66        0.66        2.54
          4 |         68        0.68        3.22
          5 |         57        0.57        3.79
          6 |         37        0.37        4.16
          7 |         43        0.43        4.59
          8 |         61        0.61        5.20
          9 |         61        0.61        5.81
         10 |         81        0.81        6.62
         11 |         62        0.62        7.24
         12 |         76        0.76        8.00
         13 |         92        0.92        8.92
         14 |        101        1.01        9.93
         15 |        156        1.56       11.49
         16 |        269        2.69       14.18
         17 |        282        2.82       17.00
         18 |        336        3.36       20.36
         19 |        314        3.14       23.50
         20 |        322        3.22       26.72
         21 |        275        2.75       29.47
         22 |        260        2.60       32.07
         23 |        262        2.62       34.69
         24 |        258        2.58       37.27
         25 |        208        2.08       39.35
         26 |        165        1.65       41.00
         27 |        184        1.84       42.84
         28 |        161        1.61       44.45
         29 |        171        1.71       46.16
         30 |        151        1.51       47.67
         31 |        154        1.54       49.21
         32 |        154        1.54       50.75
         33 |        146        1.46       52.21
         34 |        139        1.39       53.60
         35 |        146        1.46       55.06
         36 |        154        1.54       56.60
         37 |        144        1.44       58.04
         38 |        134        1.34       59.38
         39 |        142        1.42       60.80
         40 |        134        1.34       62.14
         41 |        170        1.70       63.84
         42 |        156        1.56       65.40
         43 |        124        1.24       66.64
         44 |        124        1.24       67.88
         45 |        137        1.37       69.25
         46 |        154        1.54       70.79
         47 |        142        1.42       72.21
         48 |        120        1.20       73.41
         49 |        110        1.10       74.51
         50 |        120        1.20       75.71
         51 |         96        0.96       76.67
         52 |        104        1.04       77.71
         53 |        105        1.05       78.76
         54 |        106        1.06       79.82
         55 |         96        0.96       80.78
         56 |         98        0.98       81.76
         57 |        102        1.02       82.78
         58 |         76        0.76       83.54
         59 |         70        0.70       84.24
         60 |         64        0.64       84.88
         61 |         61        0.61       85.49
         62 |         63        0.63       86.12
         63 |         49        0.49       86.61
         64 |         49        0.49       87.10
         65 |         60        0.60       87.70
         66 |         55        0.55       88.25
         67 |         59        0.59       88.84
         68 |         42        0.42       89.26
         69 |         28        0.28       89.54
         70 |         32        0.32       89.86
         71 |         38        0.38       90.24
         72 |         37        0.37       90.61
         73 |         55        0.55       91.16
         74 |         40        0.40       91.56
         75 |         48        0.48       92.04
         76 |         42        0.42       92.46
         77 |         32        0.32       92.78
         78 |         25        0.25       93.03
         79 |         42        0.42       93.45
         80 |         33        0.33       93.78
         81 |         24        0.24       94.02
         82 |         32        0.32       94.34
         83 |         31        0.31       94.65
         84 |         21        0.21       94.86
         85 |         24        0.24       95.10
         86 |         10        0.10       95.20
         87 |         18        0.18       95.38
         88 |         15        0.15       95.53
         89 |          5        0.05       95.58
         90 |          8        0.08       95.66
         91 |          5        0.05       95.71
         92 |          4        0.04       95.75
         93 |          7        0.07       95.82
         94 |          1        0.01       95.83
         95 |          4        0.04       95.87
         96 |          3        0.03       95.90
         99 |        410        4.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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