Frequencies for first 10,000 rows of chow_dt variable in posclia2013 dataset :

  CHOW Date |      Freq.     Percent        Cum.
------------+-----------------------------------
   2.00e+07 |          1        0.01        0.01
   2.00e+07 |          1        0.01        0.02
   2.00e+07 |          1        0.01        0.03
   2.00e+07 |          1        0.01        0.04
   2.00e+07 |          1        0.01        0.05
   2.00e+07 |          1        0.01        0.06
   2.00e+07 |          1        0.01        0.07
   2.00e+07 |          1        0.01        0.08
   2.00e+07 |          1        0.01        0.09
   2.00e+07 |          1        0.01        0.10
   2.00e+07 |          1        0.01        0.11
   2.00e+07 |          1        0.01        0.12
   2.00e+07 |          1        0.01        0.13
   2.00e+07 |          1        0.01        0.14
   2.00e+07 |          1        0.01        0.15
   2.00e+07 |          1        0.01        0.16
   2.00e+07 |          1        0.01        0.17
   2.00e+07 |          1        0.01        0.18
   2.01e+07 |          1        0.01        0.19
   2.01e+07 |          1        0.01        0.20
          . |      9,980       99.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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