Frequencies for first 10,000 rows of pct012g053 variable in sf12000860us22 dataset :

   50 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,203       72.03       72.03
          1 |      1,311       13.11       85.14
          2 |        522        5.22       90.36
          3 |        312        3.12       93.48
          4 |        158        1.58       95.06
          5 |        103        1.03       96.09
          6 |         61        0.61       96.70
          7 |         57        0.57       97.27
          8 |         31        0.31       97.58
          9 |         39        0.39       97.97
         10 |         29        0.29       98.26
         11 |         19        0.19       98.45
         12 |         19        0.19       98.64
         13 |         17        0.17       98.81
         14 |         10        0.10       98.91
         15 |          7        0.07       98.98
         16 |         10        0.10       99.08
         17 |          7        0.07       99.15
         18 |         13        0.13       99.28
         19 |          8        0.08       99.36
         20 |          5        0.05       99.41
         21 |          9        0.09       99.50
         22 |          4        0.04       99.54
         23 |          1        0.01       99.55
         24 |          4        0.04       99.59
         25 |          4        0.04       99.63
         26 |          7        0.07       99.70
         27 |          4        0.04       99.74
         28 |          3        0.03       99.77
         29 |          1        0.01       99.78
         30 |          2        0.02       99.80
         31 |          7        0.07       99.87
         32 |          1        0.01       99.88
         33 |          2        0.02       99.90
         35 |          1        0.01       99.91
         36 |          1        0.01       99.92
         37 |          1        0.01       99.93
         39 |          2        0.02       99.95
         40 |          1        0.01       99.96
         43 |          1        0.01       99.97
         47 |          1        0.01       99.98
         48 |          1        0.01       99.99
         71 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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