Frequencies for first 10,000 rows of pct012f071 variable in sf12000860us21 dataset :

   68 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,094       90.94       90.94
          1 |        457        4.57       95.51
          2 |        134        1.34       96.85
          3 |         81        0.81       97.66
          4 |         53        0.53       98.19
          5 |         33        0.33       98.52
          6 |         22        0.22       98.74
          7 |         17        0.17       98.91
          8 |         23        0.23       99.14
          9 |         10        0.10       99.24
         10 |         12        0.12       99.36
         11 |          6        0.06       99.42
         12 |          6        0.06       99.48
         13 |          3        0.03       99.51
         14 |          3        0.03       99.54
         15 |          1        0.01       99.55
         16 |          5        0.05       99.60
         17 |          2        0.02       99.62
         18 |          3        0.03       99.65
         19 |          7        0.07       99.72
         20 |          2        0.02       99.74
         21 |          1        0.01       99.75
         22 |          2        0.02       99.77
         23 |          2        0.02       99.79
         24 |          4        0.04       99.83
         25 |          3        0.03       99.86
         26 |          4        0.04       99.90
         28 |          1        0.01       99.91
         29 |          2        0.02       99.93
         30 |          2        0.02       99.95
         32 |          1        0.01       99.96
         33 |          1        0.01       99.97
         35 |          1        0.01       99.98
         36 |          1        0.01       99.99
         45 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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