Frequencies for first 10,000 rows of psychlgst_cnt variable in pos2005 dataset :

psychologis |
         ts |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,992       99.92       99.92
         .1 |          1        0.01       99.93
          1 |          6        0.06       99.99
        1.5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017