Frequencies for first 10,000 rows of ssa_state_cd variable in pos2009 dataset :

 STATE CODE |
      (SSA) |      Freq.     Percent        Cum.
------------+-----------------------------------
         01 |      1,872       18.72       18.72
         02 |        260        2.60       21.32
         03 |      1,509       15.09       36.41
         04 |      1,936       19.36       55.77
         05 |      4,423       44.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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