Frequencies for first 10,000 rows of PCT012A101 variable in sf12000860us16 dataset :

   98 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,757       87.57       87.57
          1 |        877        8.77       96.34
          2 |        253        2.53       98.87
          3 |         60        0.60       99.47
          4 |         28        0.28       99.75
          5 |         14        0.14       99.89
          6 |          6        0.06       99.95
          7 |          1        0.01       99.96
          8 |          2        0.02       99.98
          9 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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