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

        age |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         50        0.50        0.50
          1 |         64        0.64        1.14
          2 |         63        0.63        1.77
          3 |         41        0.41        2.18
          4 |         55        0.55        2.73
          5 |         63        0.63        3.36
          6 |         45        0.45        3.81
          7 |         44        0.44        4.25
          8 |         44        0.44        4.69
          9 |         59        0.59        5.28
         10 |         70        0.70        5.98
         11 |         64        0.64        6.62
         12 |         61        0.61        7.23
         13 |         69        0.69        7.92
         14 |         91        0.91        8.83
         15 |        129        1.29       10.12
         16 |        239        2.39       12.51
         17 |        242        2.42       14.93
         18 |        334        3.34       18.27
         19 |        315        3.15       21.42
         20 |        282        2.82       24.24
         21 |        284        2.84       27.08
         22 |        257        2.57       29.65
         23 |        264        2.64       32.29
         24 |        226        2.26       34.55
         25 |        182        1.82       36.37
         26 |        189        1.89       38.26
         27 |        164        1.64       39.90
         28 |        164        1.64       41.54
         29 |        177        1.77       43.31
         30 |        145        1.45       44.76
         31 |        131        1.31       46.07
         32 |        153        1.53       47.60
         33 |        151        1.51       49.11
         34 |        144        1.44       50.55
         35 |        144        1.44       51.99
         36 |        139        1.39       53.38
         37 |        137        1.37       54.75
         38 |        134        1.34       56.09
         39 |        151        1.51       57.60
         40 |        173        1.73       59.33
         41 |        174        1.74       61.07
         42 |        163        1.63       62.70
         43 |        167        1.67       64.37
         44 |        164        1.64       66.01
         45 |        142        1.42       67.43
         46 |        154        1.54       68.97
         47 |        151        1.51       70.48
         48 |        156        1.56       72.04
         49 |        114        1.14       73.18
         50 |        138        1.38       74.56
         51 |        122        1.22       75.78
         52 |        115        1.15       76.93
         53 |        109        1.09       78.02
         54 |        104        1.04       79.06
         55 |         94        0.94       80.00
         56 |        105        1.05       81.05
         57 |         59        0.59       81.64
         58 |         76        0.76       82.40
         59 |         82        0.82       83.22
         60 |         70        0.70       83.92
         61 |         81        0.81       84.73
         62 |         59        0.59       85.32
         63 |         75        0.75       86.07
         64 |         59        0.59       86.66
         65 |         57        0.57       87.23
         66 |         41        0.41       87.64
         67 |         42        0.42       88.06
         68 |         49        0.49       88.55
         69 |         40        0.40       88.95
         70 |         43        0.43       89.38
         71 |         38        0.38       89.76
         72 |         43        0.43       90.19
         73 |         41        0.41       90.60
         74 |         58        0.58       91.18
         75 |         31        0.31       91.49
         76 |         38        0.38       91.87
         77 |         40        0.40       92.27
         78 |         47        0.47       92.74
         79 |         28        0.28       93.02
         80 |         31        0.31       93.33
         81 |         32        0.32       93.65
         82 |         30        0.30       93.95
         83 |         30        0.30       94.25
         84 |         19        0.19       94.44
         85 |         17        0.17       94.61
         86 |         16        0.16       94.77
         87 |         22        0.22       94.99
         88 |         12        0.12       95.11
         89 |         14        0.14       95.25
         90 |          7        0.07       95.32
         91 |          3        0.03       95.35
         92 |          4        0.04       95.39
         93 |          6        0.06       95.45
         94 |          5        0.05       95.50
         95 |          3        0.03       95.53
         97 |          1        0.01       95.54
         99 |        446        4.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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