Frequencies for first 10,000 rows of pct012d178 variable in sf12010880us23 dataset :

   71 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,051       80.51       80.51
          1 |        756        7.56       88.07
          2 |        372        3.72       91.79
          3 |        194        1.94       93.73
          4 |        134        1.34       95.07
          5 |         82        0.82       95.89
          6 |         58        0.58       96.47
          7 |         52        0.52       96.99
          8 |         38        0.38       97.37
          9 |         33        0.33       97.70
         10 |         32        0.32       98.02
         11 |         21        0.21       98.23
         12 |         19        0.19       98.42
         13 |         17        0.17       98.59
         14 |         17        0.17       98.76
         15 |         11        0.11       98.87
         16 |         11        0.11       98.98
         17 |         10        0.10       99.08
         18 |          6        0.06       99.14
         19 |          8        0.08       99.22
         20 |          8        0.08       99.30
         21 |          7        0.07       99.37
         22 |          2        0.02       99.39
         23 |          5        0.05       99.44
         24 |          5        0.05       99.49
         25 |          2        0.02       99.51
         26 |          2        0.02       99.53
         27 |          2        0.02       99.55
         28 |          2        0.02       99.57
         29 |          3        0.03       99.60
         30 |          1        0.01       99.61
         31 |          4        0.04       99.65
         32 |          3        0.03       99.68
         34 |          5        0.05       99.73
         35 |          1        0.01       99.74
         36 |          1        0.01       99.75
         37 |          2        0.02       99.77
         39 |          1        0.01       99.78
         41 |          2        0.02       99.80
         42 |          5        0.05       99.85
         43 |          1        0.01       99.86
         45 |          1        0.01       99.87
         47 |          1        0.01       99.88
         48 |          2        0.02       99.90
         52 |          1        0.01       99.91
         57 |          1        0.01       99.92
         58 |          1        0.01       99.93
         68 |          1        0.01       99.94
         74 |          1        0.01       99.95
         76 |          1        0.01       99.96
        124 |          1        0.01       99.97
        143 |          1        0.01       99.98
        173 |          1        0.01       99.99
        190 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017