Frequencies for first 10,000 rows of pct012o033 variable in sf12000860us30 dataset :

   30 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,268       72.68       72.68
          1 |      1,174       11.74       84.42
          2 |        455        4.55       88.97
          3 |        317        3.17       92.14
          4 |        185        1.85       93.99
          5 |        130        1.30       95.29
          6 |         95        0.95       96.24
          7 |         64        0.64       96.88
          8 |         50        0.50       97.38
          9 |         41        0.41       97.79
         10 |         28        0.28       98.07
         11 |         29        0.29       98.36
         12 |         22        0.22       98.58
         13 |         14        0.14       98.72
         14 |         25        0.25       98.97
         15 |         10        0.10       99.07
         16 |         11        0.11       99.18
         17 |          8        0.08       99.26
         18 |          7        0.07       99.33
         19 |          8        0.08       99.41
         20 |          8        0.08       99.49
         21 |          6        0.06       99.55
         22 |          4        0.04       99.59
         23 |          2        0.02       99.61
         24 |          5        0.05       99.66
         26 |          1        0.01       99.67
         27 |          3        0.03       99.70
         28 |          3        0.03       99.73
         29 |          3        0.03       99.76
         30 |          3        0.03       99.79
         32 |          3        0.03       99.82
         33 |          1        0.01       99.83
         34 |          2        0.02       99.85
         36 |          2        0.02       99.87
         37 |          1        0.01       99.88
         39 |          1        0.01       99.89
         40 |          1        0.01       99.90
         41 |          1        0.01       99.91
         45 |          1        0.01       99.92
         49 |          1        0.01       99.93
         50 |          1        0.01       99.94
         51 |          1        0.01       99.95
         54 |          1        0.01       99.96
         57 |          1        0.01       99.97
         67 |          1        0.01       99.98
         73 |          1        0.01       99.99
         79 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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