Frequencies for first 10,000 rows of pct012c166 variable in sf12000860us18 dataset :

   59 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,195       91.95       91.95
          1 |        626        6.26       98.21
          2 |        117        1.17       99.38
          3 |         38        0.38       99.76
          4 |          7        0.07       99.83
          5 |          2        0.02       99.85
          6 |          3        0.03       99.88
          7 |          1        0.01       99.89
          8 |          2        0.02       99.91
          9 |          1        0.01       99.92
         12 |          1        0.01       99.93
         14 |          1        0.01       99.94
         19 |          1        0.01       99.95
         24 |          1        0.01       99.96
         26 |          1        0.01       99.97
         28 |          1        0.01       99.98
         34 |          1        0.01       99.99
         39 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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