Frequencies for first 10,000 rows of PCT012A097 variable in sf12000860us16 dataset :

   94 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,738       67.38       67.38
          1 |      1,503       15.03       82.41
          2 |        723        7.23       89.64
          3 |        399        3.99       93.63
          4 |        228        2.28       95.91
          5 |        136        1.36       97.27
          6 |         87        0.87       98.14
          7 |         58        0.58       98.72
          8 |         40        0.40       99.12
          9 |         20        0.20       99.32
         10 |         24        0.24       99.56
         11 |         11        0.11       99.67
         12 |          8        0.08       99.75
         13 |          6        0.06       99.81
         14 |          3        0.03       99.84
         15 |          2        0.02       99.86
         16 |          1        0.01       99.87
         17 |          2        0.02       99.89
         18 |          3        0.03       99.92
         19 |          2        0.02       99.94
         21 |          1        0.01       99.95
         23 |          2        0.02       99.97
         27 |          2        0.02       99.99
         29 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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