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

        age |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         44        0.44        0.44
          1 |         69        0.69        1.13
          2 |         85        0.85        1.98
          3 |         70        0.70        2.68
          4 |         77        0.77        3.45
          5 |         79        0.79        4.24
          6 |         57        0.57        4.81
          7 |         51        0.51        5.32
          8 |         73        0.73        6.05
          9 |         71        0.71        6.76
         10 |         61        0.61        7.37
         11 |         50        0.50        7.87
         12 |         67        0.67        8.54
         13 |         81        0.81        9.35
         14 |        102        1.02       10.37
         15 |        131        1.31       11.68
         16 |        252        2.52       14.20
         17 |        270        2.70       16.90
         18 |        328        3.28       20.18
         19 |        300        3.00       23.18
         20 |        253        2.53       25.71
         21 |        264        2.64       28.35
         22 |        223        2.23       30.58
         23 |        216        2.16       32.74
         24 |        196        1.96       34.70
         25 |        210        2.10       36.80
         26 |        209        2.09       38.89
         27 |        180        1.80       40.69
         28 |        191        1.91       42.60
         29 |        195        1.95       44.55
         30 |        169        1.69       46.24
         31 |        161        1.61       47.85
         32 |        148        1.48       49.33
         33 |        171        1.71       51.04
         34 |        168        1.68       52.72
         35 |        167        1.67       54.39
         36 |        163        1.63       56.02
         37 |        166        1.66       57.68
         38 |        147        1.47       59.15
         39 |        173        1.73       60.88
         40 |        169        1.69       62.57
         41 |        144        1.44       64.01
         42 |        130        1.30       65.31
         43 |        127        1.27       66.58
         44 |        126        1.26       67.84
         45 |        130        1.30       69.14
         46 |        124        1.24       70.38
         47 |        119        1.19       71.57
         48 |        119        1.19       72.76
         49 |        110        1.10       73.86
         50 |        114        1.14       75.00
         51 |         66        0.66       75.66
         52 |         80        0.80       76.46
         53 |        100        1.00       77.46
         54 |         88        0.88       78.34
         55 |         69        0.69       79.03
         56 |         92        0.92       79.95
         57 |         69        0.69       80.64
         58 |         79        0.79       81.43
         59 |         66        0.66       82.09
         60 |         66        0.66       82.75
         61 |         56        0.56       83.31
         62 |         53        0.53       83.84
         63 |         50        0.50       84.34
         64 |         62        0.62       84.96
         65 |         59        0.59       85.55
         66 |         63        0.63       86.18
         67 |         56        0.56       86.74
         68 |         54        0.54       87.28
         69 |         55        0.55       87.83
         70 |         48        0.48       88.31
         71 |         58        0.58       88.89
         72 |         66        0.66       89.55
         73 |         43        0.43       89.98
         74 |         45        0.45       90.43
         75 |         47        0.47       90.90
         76 |         39        0.39       91.29
         77 |         39        0.39       91.68
         78 |         36        0.36       92.04
         79 |         48        0.48       92.52
         80 |         34        0.34       92.86
         81 |         35        0.35       93.21
         82 |         36        0.36       93.57
         83 |         27        0.27       93.84
         84 |         30        0.30       94.14
         85 |         33        0.33       94.47
         86 |         21        0.21       94.68
         87 |         23        0.23       94.91
         88 |         12        0.12       95.03
         89 |         15        0.15       95.18
         90 |          8        0.08       95.26
         91 |          8        0.08       95.34
         92 |          5        0.05       95.39
         93 |          2        0.02       95.41
         94 |          2        0.02       95.43
         95 |          2        0.02       95.45
         97 |          3        0.03       95.48
         99 |        452        4.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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