Frequencies for first 10,000 rows of pct012l075 variable in sf12000860us27 dataset :

   72 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,666       86.66       86.66
          1 |        709        7.09       93.75
          2 |        246        2.46       96.21
          3 |        115        1.15       97.36
          4 |         66        0.66       98.02
          5 |         51        0.51       98.53
          6 |         34        0.34       98.87
          7 |         15        0.15       99.02
          8 |         15        0.15       99.17
          9 |         15        0.15       99.32
         10 |          9        0.09       99.41
         11 |          9        0.09       99.50
         12 |          7        0.07       99.57
         13 |         10        0.10       99.67
         14 |          5        0.05       99.72
         15 |          3        0.03       99.75
         16 |          2        0.02       99.77
         18 |          2        0.02       99.79
         19 |          1        0.01       99.80
         21 |          5        0.05       99.85
         22 |          2        0.02       99.87
         25 |          2        0.02       99.89
         26 |          1        0.01       99.90
         29 |          1        0.01       99.91
         31 |          1        0.01       99.92
         32 |          1        0.01       99.93
         40 |          1        0.01       99.94
         47 |          1        0.01       99.95
         56 |          1        0.01       99.96
         64 |          1        0.01       99.97
         68 |          1        0.01       99.98
         89 |          1        0.01       99.99
        146 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017