Frequencies for first 10,000 rows of PCT012B200 variable in sf12000860us17 dataset :

   93 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,550       85.50       85.50
          1 |        756        7.56       93.06
          2 |        264        2.64       95.70
          3 |        127        1.27       96.97
          4 |         78        0.78       97.75
          5 |         54        0.54       98.29
          6 |         43        0.43       98.72
          7 |         24        0.24       98.96
          8 |         22        0.22       99.18
          9 |         11        0.11       99.29
         10 |         12        0.12       99.41
         11 |          7        0.07       99.48
         12 |          7        0.07       99.55
         13 |          6        0.06       99.61
         14 |          8        0.08       99.69
         15 |          4        0.04       99.73
         16 |          4        0.04       99.77
         17 |          4        0.04       99.81
         18 |          5        0.05       99.86
         19 |          3        0.03       99.89
         20 |          2        0.02       99.91
         21 |          1        0.01       99.92
         22 |          2        0.02       99.94
         23 |          1        0.01       99.95
         27 |          1        0.01       99.96
         28 |          2        0.02       99.98
         30 |          1        0.01       99.99
         31 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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