Frequencies for first 10,000 rows of ssa_state_cd variable in pos1994 dataset :

 state code |
      (ssa) |      Freq.     Percent        Cum.
------------+-----------------------------------
         01 |      1,517       15.17       15.17
         02 |        184        1.84       17.01
         03 |      1,105       11.05       28.06
         04 |      1,446       14.46       42.52
         05 |      5,748       57.48      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017