Frequencies for first 10,000 rows of pct012n161 variable in sf12000860us29 dataset :

   54 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,589       95.89       95.89
          1 |        288        2.88       98.77
          2 |         66        0.66       99.43
          3 |         22        0.22       99.65
          4 |         11        0.11       99.76
          5 |          6        0.06       99.82
          6 |          6        0.06       99.88
          7 |          3        0.03       99.91
         10 |          1        0.01       99.92
         11 |          2        0.02       99.94
         12 |          1        0.01       99.95
         13 |          1        0.01       99.96
         14 |          1        0.01       99.97
         15 |          1        0.01       99.98
         18 |          1        0.01       99.99
         19 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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