Frequencies for first 10,000 rows of ssa_state_cd variable in pos2008 dataset :

 state code |
      (ssa) |      Freq.     Percent        Cum.
------------+-----------------------------------
         01 |      1,850       18.50       18.50
         02 |        256        2.56       21.06
         03 |      1,461       14.61       35.67
         04 |      1,920       19.20       54.87
         05 |      4,513       45.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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