Frequencies for first 10,000 rows of pct012f103 variable in sf12000860us21 dataset :

 100 to 104 |
      years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,941       99.41       99.41
          1 |         49        0.49       99.90
          2 |          9        0.09       99.99
          7 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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