Frequencies for first 10,000 rows of pct012g144 variable in sf12000860us22 dataset :

   37 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,823       68.23       68.23
          1 |      1,277       12.77       81.00
          2 |        582        5.82       86.82
          3 |        309        3.09       89.91
          4 |        215        2.15       92.06
          5 |        161        1.61       93.67
          6 |        100        1.00       94.67
          7 |         72        0.72       95.39
          8 |         57        0.57       95.96
          9 |         52        0.52       96.48
         10 |         37        0.37       96.85
         11 |         28        0.28       97.13
         12 |         22        0.22       97.35
         13 |         28        0.28       97.63
         14 |         22        0.22       97.85
         15 |         19        0.19       98.04
         16 |         15        0.15       98.19
         17 |         16        0.16       98.35
         18 |         20        0.20       98.55
         19 |         13        0.13       98.68
         20 |         12        0.12       98.80
         21 |         11        0.11       98.91
         22 |          4        0.04       98.95
         23 |          6        0.06       99.01
         24 |         13        0.13       99.14
         25 |          6        0.06       99.20
         26 |          7        0.07       99.27
         27 |          1        0.01       99.28
         28 |          5        0.05       99.33
         29 |          7        0.07       99.40
         30 |          8        0.08       99.48
         31 |          6        0.06       99.54
         32 |          3        0.03       99.57
         33 |          1        0.01       99.58
         34 |          4        0.04       99.62
         35 |          1        0.01       99.63
         36 |          1        0.01       99.64
         37 |          4        0.04       99.68
         38 |          2        0.02       99.70
         39 |          2        0.02       99.72
         40 |          1        0.01       99.73
         41 |          1        0.01       99.74
         42 |          2        0.02       99.76
         43 |          4        0.04       99.80
         44 |          1        0.01       99.81
         46 |          2        0.02       99.83
         47 |          1        0.01       99.84
         49 |          3        0.03       99.87
         50 |          3        0.03       99.90
         52 |          1        0.01       99.91
         55 |          2        0.02       99.93
         58 |          2        0.02       99.95
         59 |          1        0.01       99.96
         62 |          2        0.02       99.98
         63 |          1        0.01       99.99
        105 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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