Frequencies for first 10,000 rows of tchncl_prsnel_wvr_sw variable in pos2011 dataset :

Compliance: |
  Technical |
  Personnel |
     Waiver |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          2        0.02        0.02
          N |      9,997       99.97       99.99
          Y |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Apr 2019