Frequencies for first 10,000 rows of pct012c041 variable in sf12000860us18 dataset :

   38 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,437       84.37       84.37
          1 |      1,066       10.66       95.03
          2 |        263        2.63       97.66
          3 |        116        1.16       98.82
          4 |         47        0.47       99.29
          5 |         23        0.23       99.52
          6 |         14        0.14       99.66
          7 |          8        0.08       99.74
          8 |          6        0.06       99.80
          9 |          5        0.05       99.85
         10 |          2        0.02       99.87
         11 |          1        0.01       99.88
         14 |          1        0.01       99.89
         15 |          1        0.01       99.90
         17 |          1        0.01       99.91
         24 |          1        0.01       99.92
         27 |          2        0.02       99.94
         28 |          1        0.01       99.95
         40 |          1        0.01       99.96
         43 |          1        0.01       99.97
         66 |          1        0.01       99.98
         68 |          1        0.01       99.99
         76 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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