Frequencies for first 10,000 rows of ssa_state_cd variable in pos2017 dataset :

  SSA State |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
         01 |      2,148       21.48       21.48
         02 |        293        2.93       24.41
         03 |      1,939       19.39       43.80
         04 |      2,161       21.61       65.41
         05 |      3,459       34.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 9 Jan 2018