Frequencies for first 10,000 rows of pct012j200 variable in sf12000860us25 dataset :

   93 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,612       86.12       86.12
          1 |        713        7.13       93.25
          2 |        258        2.58       95.83
          3 |        118        1.18       97.01
          4 |         77        0.77       97.78
          5 |         52        0.52       98.30
          6 |         43        0.43       98.73
          7 |         25        0.25       98.98
          8 |         20        0.20       99.18
          9 |         11        0.11       99.29
         10 |         12        0.12       99.41
         11 |          7        0.07       99.48
         12 |          8        0.08       99.56
         13 |          7        0.07       99.63
         14 |          8        0.08       99.71
         15 |          4        0.04       99.75
         16 |          4        0.04       99.79
         17 |          4        0.04       99.83
         18 |          5        0.05       99.88
         19 |          1        0.01       99.89
         20 |          3        0.03       99.92
         21 |          1        0.01       99.93
         22 |          2        0.02       99.95
         27 |          1        0.01       99.96
         28 |          2        0.02       99.98
         30 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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