Frequencies for first 10,000 rows of pct012o050 variable in sf12000860us30 dataset :

   47 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,405       74.05       74.05
          1 |      1,379       13.79       87.84
          2 |        481        4.81       92.65
          3 |        248        2.48       95.13
          4 |        145        1.45       96.58
          5 |         87        0.87       97.45
          6 |         57        0.57       98.02
          7 |         44        0.44       98.46
          8 |         34        0.34       98.80
          9 |         21        0.21       99.01
         10 |         11        0.11       99.12
         11 |         17        0.17       99.29
         12 |         12        0.12       99.41
         13 |         12        0.12       99.53
         14 |          7        0.07       99.60
         15 |          2        0.02       99.62
         16 |          5        0.05       99.67
         17 |          6        0.06       99.73
         18 |          3        0.03       99.76
         19 |          5        0.05       99.81
         20 |          3        0.03       99.84
         21 |          1        0.01       99.85
         22 |          1        0.01       99.86
         23 |          2        0.02       99.88
         24 |          3        0.03       99.91
         25 |          1        0.01       99.92
         26 |          2        0.02       99.94
         27 |          1        0.01       99.95
         28 |          1        0.01       99.96
         30 |          1        0.01       99.97
         31 |          1        0.01       99.98
         37 |          1        0.01       99.99
         74 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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