Frequencies for first 10,000 rows of pct012c035 variable in sf12000860us18 dataset :

   32 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,491       84.91       84.91
          1 |        998        9.98       94.89
          2 |        295        2.95       97.84
          3 |         88        0.88       98.72
          4 |         52        0.52       99.24
          5 |         28        0.28       99.52
          6 |         15        0.15       99.67
          7 |          5        0.05       99.72
          8 |          4        0.04       99.76
          9 |          2        0.02       99.78
         10 |          3        0.03       99.81
         11 |          6        0.06       99.87
         12 |          4        0.04       99.91
         20 |          1        0.01       99.92
         22 |          1        0.01       99.93
         28 |          1        0.01       99.94
         30 |          1        0.01       99.95
         34 |          1        0.01       99.96
         41 |          1        0.01       99.97
         56 |          1        0.01       99.98
         60 |          1        0.01       99.99
         63 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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