Frequencies for first 10,000 rows of pct012d064 variable in sf12000860us19 dataset :

   61 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,910       79.10       79.10
          1 |        850        8.50       87.60
          2 |        361        3.61       91.21
          3 |        227        2.27       93.48
          4 |        145        1.45       94.93
          5 |        102        1.02       95.95
          6 |         71        0.71       96.66
          7 |         53        0.53       97.19
          8 |         26        0.26       97.45
          9 |         31        0.31       97.76
         10 |         22        0.22       97.98
         11 |         28        0.28       98.26
         12 |         21        0.21       98.47
         13 |         15        0.15       98.62
         14 |         15        0.15       98.77
         15 |         14        0.14       98.91
         16 |          9        0.09       99.00
         17 |         10        0.10       99.10
         18 |          7        0.07       99.17
         19 |         10        0.10       99.27
         20 |          5        0.05       99.32
         21 |          4        0.04       99.36
         22 |         10        0.10       99.46
         23 |          4        0.04       99.50
         24 |          1        0.01       99.51
         25 |          2        0.02       99.53
         26 |          4        0.04       99.57
         27 |          1        0.01       99.58
         28 |          2        0.02       99.60
         29 |          2        0.02       99.62
         30 |          3        0.03       99.65
         31 |          3        0.03       99.68
         33 |          1        0.01       99.69
         34 |          1        0.01       99.70
         35 |          3        0.03       99.73
         36 |          1        0.01       99.74
         37 |          2        0.02       99.76
         38 |          1        0.01       99.77
         39 |          2        0.02       99.79
         40 |          2        0.02       99.81
         41 |          2        0.02       99.83
         44 |          2        0.02       99.85
         48 |          2        0.02       99.87
         49 |          2        0.02       99.89
         50 |          2        0.02       99.91
         56 |          1        0.01       99.92
         57 |          1        0.01       99.93
         63 |          1        0.01       99.94
         70 |          1        0.01       99.95
         88 |          1        0.01       99.96
         94 |          1        0.01       99.97
        145 |          1        0.01       99.98
        165 |          1        0.01       99.99
        178 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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