Frequencies for first 10,000 rows of ssa_state_cd variable in pos2015 dataset :

  SSA State |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
         01 |      2,086       20.86       20.86
         02 |        281        2.81       23.67
         03 |      1,811       18.11       41.78
         04 |      2,099       20.99       62.77
         05 |      3,723       37.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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