Frequencies for first 10,000 rows of pct012n051 variable in sf12010860us33 dataset :

   48 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,218       92.18       92.18
          1 |        541        5.41       97.59
          2 |        123        1.23       98.82
          3 |         43        0.43       99.25
          4 |         15        0.15       99.40
          5 |         11        0.11       99.51
          6 |         10        0.10       99.61
          7 |          6        0.06       99.67
          8 |          7        0.07       99.74
          9 |          6        0.06       99.80
         10 |          4        0.04       99.84
         11 |          1        0.01       99.85
         12 |          5        0.05       99.90
         13 |          3        0.03       99.93
         17 |          2        0.02       99.95
         20 |          1        0.01       99.96
         21 |          1        0.01       99.97
         30 |          1        0.01       99.98
         42 |          1        0.01       99.99
         44 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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