Frequencies for first 10,000 rows of pct012c035 variable in sf12010860us22 dataset :

   32 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,443       84.43       84.43
          1 |        930        9.30       93.73
          2 |        327        3.27       97.00
          3 |        129        1.29       98.29
          4 |         54        0.54       98.83
          5 |         45        0.45       99.28
          6 |         14        0.14       99.42
          7 |         18        0.18       99.60
          8 |         12        0.12       99.72
          9 |          3        0.03       99.75
         10 |          5        0.05       99.80
         11 |          2        0.02       99.82
         12 |          1        0.01       99.83
         13 |          2        0.02       99.85
         14 |          1        0.01       99.86
         15 |          2        0.02       99.88
         21 |          3        0.03       99.91
         26 |          2        0.02       99.93
         32 |          1        0.01       99.94
         34 |          1        0.01       99.95
         38 |          1        0.01       99.96
         40 |          1        0.01       99.97
         59 |          1        0.01       99.98
         69 |          1        0.01       99.99
         78 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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