Frequencies for first 10,000 rows of pct012l186 variable in sf12000860us27 dataset :

   79 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,948       89.48       89.48
          1 |        589        5.89       95.37
          2 |        190        1.90       97.27
          3 |        105        1.05       98.32
          4 |         50        0.50       98.82
          5 |         30        0.30       99.12
          6 |         21        0.21       99.33
          7 |         15        0.15       99.48
          8 |          7        0.07       99.55
          9 |          7        0.07       99.62
         10 |          7        0.07       99.69
         11 |          4        0.04       99.73
         12 |          1        0.01       99.74
         13 |          3        0.03       99.77
         14 |          4        0.04       99.81
         15 |          4        0.04       99.85
         16 |          2        0.02       99.87
         18 |          1        0.01       99.88
         19 |          2        0.02       99.90
         20 |          1        0.01       99.91
         21 |          1        0.01       99.92
         23 |          1        0.01       99.93
         24 |          1        0.01       99.94
         38 |          1        0.01       99.95
         43 |          1        0.01       99.96
         44 |          1        0.01       99.97
         52 |          1        0.01       99.98
         68 |          1        0.01       99.99
        104 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017