Frequencies for first 10,000 rows of ssa_state_cd variable in pos2004 dataset :

 state code |
      (ssa) |      Freq.     Percent        Cum.
------------+-----------------------------------
         01 |      1,722       17.22       17.22
         02 |        229        2.29       19.51
         03 |      1,268       12.68       32.19
         04 |      1,791       17.91       50.10
         05 |      4,990       49.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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