Frequencies for first 10,000 rows of pct012l189 variable in sf12000860us27 dataset :

   82 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,147       91.47       91.47
          1 |        543        5.43       96.90
          2 |        137        1.37       98.27
          3 |         57        0.57       98.84
          4 |         34        0.34       99.18
          5 |         24        0.24       99.42
          6 |         15        0.15       99.57
          7 |          9        0.09       99.66
          8 |          5        0.05       99.71
          9 |          8        0.08       99.79
         10 |          3        0.03       99.82
         11 |          3        0.03       99.85
         12 |          4        0.04       99.89
         13 |          1        0.01       99.90
         14 |          1        0.01       99.91
         16 |          1        0.01       99.92
         23 |          1        0.01       99.93
         24 |          2        0.02       99.95
         28 |          1        0.01       99.96
         34 |          1        0.01       99.97
         37 |          1        0.01       99.98
         45 |          1        0.01       99.99
         82 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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