Frequencies for first 10,000 rows of pct012n032 variable in sf12000860us29 dataset :

   29 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,219       92.19       92.19
          1 |        488        4.88       97.07
          2 |        137        1.37       98.44
          3 |         69        0.69       99.13
          4 |         24        0.24       99.37
          5 |         12        0.12       99.49
          6 |         14        0.14       99.63
          7 |          4        0.04       99.67
          8 |          3        0.03       99.70
          9 |          8        0.08       99.78
         10 |          4        0.04       99.82
         11 |          2        0.02       99.84
         12 |          1        0.01       99.85
         13 |          4        0.04       99.89
         14 |          1        0.01       99.90
         15 |          1        0.01       99.91
         16 |          2        0.02       99.93
         17 |          1        0.01       99.94
         18 |          1        0.01       99.95
         20 |          1        0.01       99.96
         26 |          1        0.01       99.97
         34 |          1        0.01       99.98
         35 |          1        0.01       99.99
         42 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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