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

        Age |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         44        0.44        0.44
          1 |         52        0.52        0.96
          2 |         64        0.64        1.60
          3 |         54        0.54        2.14
          4 |         69        0.69        2.83
          5 |         54        0.54        3.37
          6 |         63        0.63        4.00
          7 |         51        0.51        4.51
          8 |         51        0.51        5.02
          9 |         55        0.55        5.57
         10 |         43        0.43        6.00
         11 |         42        0.42        6.42
         12 |         72        0.72        7.14
         13 |         76        0.76        7.90
         14 |        112        1.12        9.02
         15 |        178        1.78       10.80
         16 |        265        2.65       13.45
         17 |        320        3.20       16.65
         18 |        397        3.97       20.62
         19 |        394        3.94       24.56
         20 |        363        3.63       28.19
         21 |        367        3.67       31.86
         22 |        336        3.36       35.22
         23 |        366        3.66       38.88
         24 |        296        2.96       41.84
         25 |        275        2.75       44.59
         26 |        229        2.29       46.88
         27 |        231        2.31       49.19
         28 |        222        2.22       51.41
         29 |        213        2.13       53.54
         30 |        195        1.95       55.49
         31 |        188        1.88       57.37
         32 |        206        2.06       59.43
         33 |        177        1.77       61.20
         34 |        167        1.67       62.87
         35 |        137        1.37       64.24
         36 |        147        1.47       65.71
         37 |        136        1.36       67.07
         38 |        120        1.20       68.27
         39 |        108        1.08       69.35
         40 |        109        1.09       70.44
         41 |         97        0.97       71.41
         42 |        107        1.07       72.48
         43 |         82        0.82       73.30
         44 |         93        0.93       74.23
         45 |         89        0.89       75.12
         46 |         65        0.65       75.77
         47 |         72        0.72       76.49
         48 |         81        0.81       77.30
         49 |         60        0.60       77.90
         50 |         68        0.68       78.58
         51 |         73        0.73       79.31
         52 |         63        0.63       79.94
         53 |         69        0.69       80.63
         54 |         71        0.71       81.34
         55 |         73        0.73       82.07
         56 |         67        0.67       82.74
         57 |         54        0.54       83.28
         58 |         73        0.73       84.01
         59 |         57        0.57       84.58
         60 |         57        0.57       85.15
         61 |         58        0.58       85.73
         62 |         62        0.62       86.35
         63 |         52        0.52       86.87
         64 |         48        0.48       87.35
         65 |         62        0.62       87.97
         66 |         49        0.49       88.46
         67 |         36        0.36       88.82
         68 |         50        0.50       89.32
         69 |         39        0.39       89.71
         70 |         53        0.53       90.24
         71 |         40        0.40       90.64
         72 |         30        0.30       90.94
         73 |         55        0.55       91.49
         74 |         47        0.47       91.96
         75 |         45        0.45       92.41
         76 |         36        0.36       92.77
         77 |         21        0.21       92.98
         78 |         24        0.24       93.22
         79 |         33        0.33       93.55
         80 |         23        0.23       93.78
         81 |         24        0.24       94.02
         82 |         17        0.17       94.19
         83 |         17        0.17       94.36
         84 |         18        0.18       94.54
         85 |         13        0.13       94.67
         86 |         10        0.10       94.77
         87 |         11        0.11       94.88
         88 |          9        0.09       94.97
         89 |          9        0.09       95.06
         90 |          4        0.04       95.10
         91 |          5        0.05       95.15
         92 |          2        0.02       95.17
         93 |          6        0.06       95.23
         94 |          1        0.01       95.24
         95 |          1        0.01       95.25
         99 |        475        4.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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