Frequencies for first 10,000 rows of sbunit_oprtn_sw variable in pos2012 datase

    Subunit |
  Operation |
     Switch |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,520       15.20       15.20
          N |      8,461       84.61       99.81
          Y |         19        0.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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