Frequencies for first 10,000 rows of pct012n136 variable in sf12010880us33 dataset :

   29 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,134       91.34       91.34
          1 |        494        4.94       96.28
          2 |        156        1.56       97.84
          3 |         83        0.83       98.67
          4 |         41        0.41       99.08
          5 |         23        0.23       99.31
          6 |         14        0.14       99.45
          7 |         10        0.10       99.55
          8 |          8        0.08       99.63
          9 |          5        0.05       99.68
         10 |          6        0.06       99.74
         11 |          3        0.03       99.77
         12 |          1        0.01       99.78
         13 |          2        0.02       99.80
         14 |          2        0.02       99.82
         15 |          2        0.02       99.84
         16 |          3        0.03       99.87
         17 |          1        0.01       99.88
         18 |          2        0.02       99.90
         19 |          1        0.01       99.91
         21 |          1        0.01       99.92
         27 |          1        0.01       99.93
         28 |          1        0.01       99.94
         29 |          1        0.01       99.95
         30 |          1        0.01       99.96
         36 |          1        0.01       99.97
         39 |          1        0.01       99.98
         48 |          1        0.01       99.99
         64 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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