Frequencies for first 10,000 rows of pct012f174 variable in sf12000860us21 dataset :

   67 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,970       89.70       89.70
          1 |        473        4.73       94.43
          2 |        166        1.66       96.09
          3 |         86        0.86       96.95
          4 |         64        0.64       97.59
          5 |         24        0.24       97.83
          6 |         27        0.27       98.10
          7 |         23        0.23       98.33
          8 |         23        0.23       98.56
          9 |         14        0.14       98.70
         10 |         12        0.12       98.82
         11 |         21        0.21       99.03
         12 |         12        0.12       99.15
         13 |          6        0.06       99.21
         14 |          8        0.08       99.29
         15 |          3        0.03       99.32
         16 |          2        0.02       99.34
         17 |          4        0.04       99.38
         18 |          4        0.04       99.42
         19 |          1        0.01       99.43
         20 |          4        0.04       99.47
         21 |          4        0.04       99.51
         22 |          2        0.02       99.53
         23 |          1        0.01       99.54
         24 |          2        0.02       99.56
         26 |          3        0.03       99.59
         27 |          1        0.01       99.60
         29 |          5        0.05       99.65
         30 |          3        0.03       99.68
         33 |          3        0.03       99.71
         35 |          1        0.01       99.72
         36 |          3        0.03       99.75
         37 |          4        0.04       99.79
         38 |          1        0.01       99.80
         39 |          1        0.01       99.81
         41 |          1        0.01       99.82
         42 |          2        0.02       99.84
         43 |          3        0.03       99.87
         44 |          1        0.01       99.88
         45 |          2        0.02       99.90
         46 |          1        0.01       99.91
         47 |          2        0.02       99.93
         48 |          1        0.01       99.94
         50 |          2        0.02       99.96
         59 |          1        0.01       99.97
         60 |          1        0.01       99.98
         65 |          1        0.01       99.99
         75 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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