Frequencies for first 10,000 rows of prov4270 variable in posclia2003 dataset :

   prov4270 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,976       99.76       99.76
 01D0938643 |          1        0.01       99.77
 01D0961240 |          3        0.03       99.80
 01D0961241 |          5        0.05       99.85
 03D0892889 |          1        0.01       99.86
 03D0893377 |          1        0.01       99.87
 03D0893820 |          1        0.01       99.88
 03D0898104 |          7        0.07       99.95
 03D0902109 |          1        0.01       99.96
 03D0917908 |          1        0.01       99.97
 03D0996962 |          1        0.01       99.98
 23D1004102 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016