Frequencies for first 10,000 rows of pct012204 variable in sf12000860us14 dataset :

   97 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,029       60.29       60.29
          1 |      1,426       14.26       74.55
          2 |        710        7.10       81.65
          3 |        441        4.41       86.06
          4 |        339        3.39       89.45
          5 |        247        2.47       91.92
          6 |        182        1.82       93.74
          7 |        152        1.52       95.26
          8 |        125        1.25       96.51
          9 |         78        0.78       97.29
         10 |         62        0.62       97.91
         11 |         41        0.41       98.32
         12 |         44        0.44       98.76
         13 |         24        0.24       99.00
         14 |         24        0.24       99.24
         15 |         11        0.11       99.35
         16 |         15        0.15       99.50
         17 |          7        0.07       99.57
         18 |          4        0.04       99.61
         19 |          7        0.07       99.68
         20 |          2        0.02       99.70
         21 |          6        0.06       99.76
         22 |          2        0.02       99.78
         24 |          5        0.05       99.83
         25 |          1        0.01       99.84
         26 |          3        0.03       99.87
         27 |          3        0.03       99.90
         28 |          3        0.03       99.93
         29 |          3        0.03       99.96
         30 |          1        0.01       99.97
         34 |          2        0.02       99.99
         36 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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