Frequencies for first 10,000 rows of last_rpt_sw variable in snf_rpt2540_10_201

last report |
     switch |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |      9,952       99.52       99.52
          X |          4        0.04       99.56
          Y |         44        0.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Apr 2018