Frequencies for first 10,000 rows of pct012g045 variable in sf12000860us22 dataset :

   42 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,914       69.14       69.14
          1 |      1,268       12.68       81.82
          2 |        597        5.97       87.79
          3 |        311        3.11       90.90
          4 |        181        1.81       92.71
          5 |        138        1.38       94.09
          6 |         93        0.93       95.02
          7 |         89        0.89       95.91
          8 |         69        0.69       96.60
          9 |         34        0.34       96.94
         10 |         47        0.47       97.41
         11 |         37        0.37       97.78
         12 |         20        0.20       97.98
         13 |         19        0.19       98.17
         14 |         19        0.19       98.36
         15 |         10        0.10       98.46
         16 |         13        0.13       98.59
         17 |          8        0.08       98.67
         18 |         13        0.13       98.80
         19 |         16        0.16       98.96
         20 |         12        0.12       99.08
         21 |          6        0.06       99.14
         22 |          3        0.03       99.17
         23 |          3        0.03       99.20
         24 |          6        0.06       99.26
         25 |          7        0.07       99.33
         26 |          6        0.06       99.39
         27 |          8        0.08       99.47
         28 |          8        0.08       99.55
         29 |          3        0.03       99.58
         30 |          1        0.01       99.59
         31 |          4        0.04       99.63
         32 |          1        0.01       99.64
         33 |          1        0.01       99.65
         34 |          4        0.04       99.69
         36 |          1        0.01       99.70
         38 |          3        0.03       99.73
         39 |          2        0.02       99.75
         40 |          1        0.01       99.76
         41 |          3        0.03       99.79
         42 |          4        0.04       99.83
         43 |          2        0.02       99.85
         44 |          1        0.01       99.86
         45 |          1        0.01       99.87
         48 |          2        0.02       99.89
         49 |          1        0.01       99.90
         54 |          3        0.03       99.93
         55 |          1        0.01       99.94
         56 |          1        0.01       99.95
         58 |          1        0.01       99.96
         59 |          1        0.01       99.97
         63 |          1        0.01       99.98
         69 |          1        0.01       99.99
         81 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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