Frequencies for first 10,000 rows of pct013c047 variable in sf12010880us35 dataset :

   75 to 79 |
      years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,797       87.97       87.97
          1 |        799        7.99       95.96
          2 |        197        1.97       97.93
          3 |         92        0.92       98.85
          4 |         43        0.43       99.28
          5 |         26        0.26       99.54
          6 |         15        0.15       99.69
          7 |          7        0.07       99.76
          8 |          6        0.06       99.82
          9 |          5        0.05       99.87
         10 |          4        0.04       99.91
         11 |          4        0.04       99.95
         12 |          2        0.02       99.97
         15 |          1        0.01       99.98
         16 |          1        0.01       99.99
         39 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017