Frequencies for first 10,000 rows of prov4270 variable in posclia1998 dataset :

   prov4270 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,984       99.84       99.84
 03D0892889 |          1        0.01       99.85
 03D0893377 |          1        0.01       99.86
 03D0893820 |          1        0.01       99.87
 03D0898104 |          7        0.07       99.94
 03D0902109 |          1        0.01       99.95
 04D0886229 |          1        0.01       99.96
 04D0901322 |          1        0.01       99.97
 04D0917903 |          1        0.01       99.98
 04D0917906 |          1        0.01       99.99
 44D0900406 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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