Frequencies for first 10,000 rows of pps_blend variable in psfhos201507 dataset :

Federal PPS |
      Blend |
  Indicator |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,508       95.08       95.08
          0 |        472        4.72       99.80
          1 |         15        0.15       99.95
          O |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Feb 2018