Frequencies for first 10,000 rows of pct012c130 variable in sf12000860us18 dataset :

   23 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,726       87.26       87.26
          1 |        832        8.32       95.58
          2 |        219        2.19       97.77
          3 |         93        0.93       98.70
          4 |         56        0.56       99.26
          5 |         25        0.25       99.51
          6 |         14        0.14       99.65
          7 |         11        0.11       99.76
          8 |          3        0.03       99.79
          9 |          4        0.04       99.83
         10 |          4        0.04       99.87
         12 |          1        0.01       99.88
         13 |          1        0.01       99.89
         15 |          2        0.02       99.91
         17 |          1        0.01       99.92
         21 |          1        0.01       99.93
         28 |          1        0.01       99.94
         34 |          1        0.01       99.95
         41 |          1        0.01       99.96
         55 |          1        0.01       99.97
         63 |          1        0.01       99.98
         73 |          1        0.01       99.99
         76 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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