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

        age |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         40        0.40        0.40
          1 |         45        0.45        0.85
          2 |         51        0.51        1.36
          3 |         50        0.50        1.86
          4 |         51        0.51        2.37
          5 |         50        0.50        2.87
          6 |         39        0.39        3.26
          7 |         37        0.37        3.63
          8 |         49        0.49        4.12
          9 |         45        0.45        4.57
         10 |         45        0.45        5.02
         11 |         47        0.47        5.49
         12 |         69        0.69        6.18
         13 |         66        0.66        6.84
         14 |         96        0.96        7.80
         15 |        133        1.33        9.13
         16 |        190        1.90       11.03
         17 |        245        2.45       13.48
         18 |        338        3.38       16.86
         19 |        319        3.19       20.05
         20 |        295        2.95       23.00
         21 |        305        3.05       26.05
         22 |        269        2.69       28.74
         23 |        241        2.41       31.15
         24 |        253        2.53       33.68
         25 |        221        2.21       35.89
         26 |        197        1.97       37.86
         27 |        203        2.03       39.89
         28 |        207        2.07       41.96
         29 |        171        1.71       43.67
         30 |        170        1.70       45.37
         31 |        154        1.54       46.91
         32 |        153        1.53       48.44
         33 |        121        1.21       49.65
         34 |        141        1.41       51.06
         35 |        151        1.51       52.57
         36 |        152        1.52       54.09
         37 |        149        1.49       55.58
         38 |        147        1.47       57.05
         39 |        136        1.36       58.41
         40 |        145        1.45       59.86
         41 |        139        1.39       61.25
         42 |        159        1.59       62.84
         43 |        128        1.28       64.12
         44 |        149        1.49       65.61
         45 |        133        1.33       66.94
         46 |        138        1.38       68.32
         47 |        140        1.40       69.72
         48 |        160        1.60       71.32
         49 |        139        1.39       72.71
         50 |        134        1.34       74.05
         51 |        136        1.36       75.41
         52 |        113        1.13       76.54
         53 |        116        1.16       77.70
         54 |        103        1.03       78.73
         55 |        124        1.24       79.97
         56 |        119        1.19       81.16
         57 |         96        0.96       82.12
         58 |         87        0.87       82.99
         59 |        100        1.00       83.99
         60 |        106        1.06       85.05
         61 |        106        1.06       86.11
         62 |         74        0.74       86.85
         63 |         71        0.71       87.56
         64 |         53        0.53       88.09
         65 |         68        0.68       88.77
         66 |         38        0.38       89.15
         67 |         50        0.50       89.65
         68 |         36        0.36       90.01
         69 |         43        0.43       90.44
         70 |         53        0.53       90.97
         71 |         45        0.45       91.42
         72 |         28        0.28       91.70
         73 |         43        0.43       92.13
         74 |         37        0.37       92.50
         75 |         39        0.39       92.89
         76 |         43        0.43       93.32
         77 |         40        0.40       93.72
         78 |         33        0.33       94.05
         79 |         30        0.30       94.35
         80 |         29        0.29       94.64
         81 |         19        0.19       94.83
         82 |         27        0.27       95.10
         83 |         20        0.20       95.30
         84 |         34        0.34       95.64
         85 |         21        0.21       95.85
         86 |         20        0.20       96.05
         87 |         14        0.14       96.19
         88 |          7        0.07       96.26
         89 |          8        0.08       96.34
         90 |          7        0.07       96.41
         91 |          9        0.09       96.50
         92 |          5        0.05       96.55
         93 |          5        0.05       96.60
         94 |          1        0.01       96.61
         95 |          2        0.02       96.63
         96 |          1        0.01       96.64
         99 |        336        3.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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