Frequencies for first 10,000 rows of prov1495 variable in pos2006 dataset :

lpns/lvns - |
  volunteer |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,991       99.91       99.91
        .25 |          1        0.01       99.92
        .75 |          1        0.01       99.93
          1 |          3        0.03       99.96
          2 |          2        0.02       99.98
          3 |          1        0.01       99.99
          8 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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