Frequencies for first 10,000 rows of pct012g140 variable in sf12000860us22 dataset :

   33 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,903       69.03       69.03
          1 |      1,270       12.70       81.73
          2 |        519        5.19       86.92
          3 |        297        2.97       89.89
          4 |        212        2.12       92.01
          5 |        143        1.43       93.44
          6 |        105        1.05       94.49
          7 |         96        0.96       95.45
          8 |         72        0.72       96.17
          9 |         39        0.39       96.56
         10 |         35        0.35       96.91
         11 |         30        0.30       97.21
         12 |         19        0.19       97.40
         13 |         32        0.32       97.72
         14 |         22        0.22       97.94
         15 |         16        0.16       98.10
         16 |         13        0.13       98.23
         17 |         15        0.15       98.38
         18 |         12        0.12       98.50
         19 |         14        0.14       98.64
         20 |         16        0.16       98.80
         21 |          8        0.08       98.88
         22 |         10        0.10       98.98
         23 |          9        0.09       99.07
         24 |          5        0.05       99.12
         25 |          6        0.06       99.18
         26 |          5        0.05       99.23
         27 |          5        0.05       99.28
         28 |          6        0.06       99.34
         29 |          4        0.04       99.38
         30 |          5        0.05       99.43
         31 |          4        0.04       99.47
         32 |          4        0.04       99.51
         33 |          7        0.07       99.58
         34 |          5        0.05       99.63
         35 |          3        0.03       99.66
         36 |          2        0.02       99.68
         37 |          4        0.04       99.72
         39 |          4        0.04       99.76
         40 |          1        0.01       99.77
         41 |          2        0.02       99.79
         42 |          1        0.01       99.80
         44 |          2        0.02       99.82
         45 |          2        0.02       99.84
         46 |          1        0.01       99.85
         47 |          2        0.02       99.87
         48 |          4        0.04       99.91
         53 |          1        0.01       99.92
         55 |          1        0.01       99.93
         57 |          1        0.01       99.94
         58 |          1        0.01       99.95
         61 |          1        0.01       99.96
         63 |          1        0.01       99.97
         76 |          1        0.01       99.98
         82 |          1        0.01       99.99
        100 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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