Frequencies for first 10,000 rows of pct012c050 variable in sf12000860us18 dataset :

   47 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,582       85.82       85.82
          1 |      1,026       10.26       96.08
          2 |        234        2.34       98.42
          3 |         88        0.88       99.30
          4 |         30        0.30       99.60
          5 |         12        0.12       99.72
          6 |          8        0.08       99.80
          7 |          5        0.05       99.85
          8 |          1        0.01       99.86
          9 |          3        0.03       99.89
         10 |          1        0.01       99.90
         13 |          1        0.01       99.91
         17 |          1        0.01       99.92
         21 |          1        0.01       99.93
         26 |          1        0.01       99.94
         28 |          1        0.01       99.95
         35 |          1        0.01       99.96
         39 |          1        0.01       99.97
         52 |          1        0.01       99.98
         55 |          1        0.01       99.99
         63 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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