Frequencies for first 10,000 rows of aabb_acrdtd_y_match_dt variable in posclia

    AO AABB |
 Accredited |
    Y Match |
       Date |      Freq.     Percent        Cum.
------------+-----------------------------------
   2.00e+07 |          1        0.01        0.01
   2.00e+07 |          1        0.01        0.02
   2.01e+07 |          1        0.01        0.03
   2.01e+07 |          1        0.01        0.04
          . |      9,996       99.96      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 9 Jan 2018