Frequencies for first 10,000 rows of pct012n053 variable in sf12010860us33 dataset :

   50 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,213       92.13       92.13
          1 |        523        5.23       97.36
          2 |        134        1.34       98.70
          3 |         41        0.41       99.11
          4 |         24        0.24       99.35
          5 |         19        0.19       99.54
          6 |         12        0.12       99.66
          7 |          5        0.05       99.71
          8 |          5        0.05       99.76
          9 |          2        0.02       99.78
         10 |          4        0.04       99.82
         11 |          4        0.04       99.86
         12 |          2        0.02       99.88
         13 |          3        0.03       99.91
         14 |          2        0.02       99.93
         18 |          1        0.01       99.94
         19 |          1        0.01       99.95
         21 |          2        0.02       99.97
         42 |          1        0.01       99.98
         56 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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