Frequencies for first 10,000 rows of wksht_cd variable in snf_alpha2540_96_2007

   wksht_cd |      Freq.     Percent        Cum.
------------+-----------------------------------
    A000000 |      4,100       41.00       41.00
    A81000A |         83        0.83       41.83
    A81000B |        400        4.00       45.83
    A81000C |        971        9.71       55.54
    B100000 |      1,065       10.65       66.19
    E10A180 |         10        0.10       66.29
    S000000 |        110        1.10       67.39
    S200000 |      3,261       32.61      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Feb 2018