Frequencies for first 10,000 rows of pct012k152 variable in sf12000860us26 dataset :

   45 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,713       87.13       87.13
          1 |        963        9.63       96.76
          2 |        206        2.06       98.82
          3 |         64        0.64       99.46
          4 |         14        0.14       99.60
          5 |         10        0.10       99.70
          6 |          5        0.05       99.75
          7 |          4        0.04       99.79
          8 |          5        0.05       99.84
          9 |          1        0.01       99.85
         10 |          1        0.01       99.86
         11 |          2        0.02       99.88
         13 |          1        0.01       99.89
         14 |          1        0.01       99.90
         16 |          1        0.01       99.91
         22 |          1        0.01       99.92
         24 |          1        0.01       99.93
         26 |          1        0.01       99.94
         28 |          1        0.01       99.95
         34 |          1        0.01       99.96
         56 |          1        0.01       99.97
         66 |          1        0.01       99.98
         68 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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