Frequencies for first 10,000 rows of prov2080 variable in pos1995 dataset :

 srv: blood |
       bank |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,933       89.33       89.33
          0 |        265        2.65       91.98
          1 |        503        5.03       97.01
          2 |        261        2.61       99.62
          3 |         38        0.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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