Frequencies for first 10,000 rows of pct013g008 variable in sf12000860us32 dataset :

   20 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,873       68.73       68.73
          1 |      1,197       11.97       80.70
          2 |        562        5.62       86.32
          3 |        303        3.03       89.35
          4 |        202        2.02       91.37
          5 |        159        1.59       92.96
          6 |        110        1.10       94.06
          7 |         70        0.70       94.76
          8 |         66        0.66       95.42
          9 |         56        0.56       95.98
         10 |         37        0.37       96.35
         11 |         36        0.36       96.71
         12 |         36        0.36       97.07
         13 |         39        0.39       97.46
         14 |         37        0.37       97.83
         15 |         26        0.26       98.09
         16 |         24        0.24       98.33
         17 |         17        0.17       98.50
         18 |         12        0.12       98.62
         19 |         11        0.11       98.73
         20 |         13        0.13       98.86
         21 |          8        0.08       98.94
         22 |          5        0.05       98.99
         23 |          6        0.06       99.05
         24 |          8        0.08       99.13
         25 |          1        0.01       99.14
         26 |          5        0.05       99.19
         27 |          7        0.07       99.26
         28 |         10        0.10       99.36
         29 |          8        0.08       99.44
         30 |          4        0.04       99.48
         31 |          4        0.04       99.52
         32 |          3        0.03       99.55
         33 |          7        0.07       99.62
         34 |          4        0.04       99.66
         35 |          4        0.04       99.70
         36 |          1        0.01       99.71
         37 |          3        0.03       99.74
         38 |          3        0.03       99.77
         40 |          3        0.03       99.80
         41 |          2        0.02       99.82
         42 |          1        0.01       99.83
         43 |          1        0.01       99.84
         44 |          1        0.01       99.85
         45 |          3        0.03       99.88
         46 |          2        0.02       99.90
         48 |          2        0.02       99.92
         49 |          2        0.02       99.94
         51 |          1        0.01       99.95
         56 |          1        0.01       99.96
         58 |          1        0.01       99.97
         62 |          1        0.01       99.98
         72 |          1        0.01       99.99
         82 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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