Frequencies for first 10,000 rows of pct012c154 variable in sf12010860us22 dataset :

   47 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,282       82.82       82.82
          1 |      1,099       10.99       93.81
          2 |        341        3.41       97.22
          3 |        135        1.35       98.57
          4 |         57        0.57       99.14
          5 |         23        0.23       99.37
          6 |         22        0.22       99.59
          7 |          5        0.05       99.64
          8 |          5        0.05       99.69
          9 |          3        0.03       99.72
         10 |          6        0.06       99.78
         11 |          5        0.05       99.83
         12 |          2        0.02       99.85
         13 |          3        0.03       99.88
         15 |          1        0.01       99.89
         17 |          1        0.01       99.90
         19 |          1        0.01       99.91
         21 |          1        0.01       99.92
         22 |          1        0.01       99.93
         34 |          1        0.01       99.94
         38 |          1        0.01       99.95
         42 |          1        0.01       99.96
         55 |          1        0.01       99.97
         58 |          1        0.01       99.98
         64 |          1        0.01       99.99
         73 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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