Frequencies for first 10,000 rows of pct012n145 variable in sf12000860us29 dataset :

   38 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,235       92.35       92.35
          1 |        515        5.15       97.50
          2 |        123        1.23       98.73
          3 |         43        0.43       99.16
          4 |         31        0.31       99.47
          5 |         11        0.11       99.58
          6 |          8        0.08       99.66
          7 |          4        0.04       99.70
          8 |          7        0.07       99.77
          9 |          3        0.03       99.80
         10 |          3        0.03       99.83
         11 |          3        0.03       99.86
         13 |          3        0.03       99.89
         14 |          1        0.01       99.90
         15 |          1        0.01       99.91
         17 |          1        0.01       99.92
         19 |          1        0.01       99.93
         21 |          1        0.01       99.94
         22 |          2        0.02       99.96
         26 |          1        0.01       99.97
         36 |          1        0.01       99.98
         43 |          1        0.01       99.99
         47 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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