Frequencies for first 10,000 rows of pct012n130 variable in sf12000860us29 dataset :

   23 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,245       92.45       92.45
          1 |        471        4.71       97.16
          2 |        132        1.32       98.48
          3 |         45        0.45       98.93
          4 |         28        0.28       99.21
          5 |         17        0.17       99.38
          6 |         14        0.14       99.52
          7 |          8        0.08       99.60
          8 |          8        0.08       99.68
          9 |          6        0.06       99.74
         10 |          9        0.09       99.83
         11 |          3        0.03       99.86
         13 |          2        0.02       99.88
         14 |          1        0.01       99.89
         17 |          1        0.01       99.90
         18 |          1        0.01       99.91
         19 |          2        0.02       99.93
         21 |          2        0.02       99.95
         25 |          1        0.01       99.96
         37 |          2        0.02       99.98
         44 |          1        0.01       99.99
         55 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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