Frequencies for first 10,000 rows of pct012l178 variable in sf12010860us31 dataset :

   71 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,741       77.41       77.41
          1 |        883        8.83       86.24
          2 |        445        4.45       90.69
          3 |        223        2.23       92.92
          4 |        160        1.60       94.52
          5 |         95        0.95       95.47
          6 |         69        0.69       96.16
          7 |         61        0.61       96.77
          8 |         45        0.45       97.22
          9 |         36        0.36       97.58
         10 |         33        0.33       97.91
         11 |         23        0.23       98.14
         12 |         21        0.21       98.35
         13 |         16        0.16       98.51
         14 |         17        0.17       98.68
         15 |         13        0.13       98.81
         16 |          9        0.09       98.90
         17 |         11        0.11       99.01
         18 |          9        0.09       99.10
         19 |          8        0.08       99.18
         20 |          8        0.08       99.26
         21 |          8        0.08       99.34
         22 |          2        0.02       99.36
         23 |          6        0.06       99.42
         24 |          5        0.05       99.47
         25 |          3        0.03       99.50
         26 |          3        0.03       99.53
         27 |          2        0.02       99.55
         28 |          2        0.02       99.57
         29 |          2        0.02       99.59
         30 |          2        0.02       99.61
         31 |          5        0.05       99.66
         32 |          2        0.02       99.68
         33 |          1        0.01       99.69
         34 |          4        0.04       99.73
         36 |          2        0.02       99.75
         37 |          2        0.02       99.77
         39 |          1        0.01       99.78
         41 |          2        0.02       99.80
         42 |          5        0.05       99.85
         43 |          1        0.01       99.86
         44 |          1        0.01       99.87
         47 |          1        0.01       99.88
         48 |          2        0.02       99.90
         52 |          1        0.01       99.91
         57 |          1        0.01       99.92
         58 |          1        0.01       99.93
         68 |          1        0.01       99.94
         74 |          1        0.01       99.95
         75 |          1        0.01       99.96
        123 |          1        0.01       99.97
        143 |          1        0.01       99.98
        171 |          1        0.01       99.99
        190 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Apr 2017