Frequencies for first 10,000 rows of rollover variable in person dataset :

   rollover |
       type |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,991       69.91       69.91
          1 |      1,895       18.95       88.86
          2 |        225        2.25       91.11
          9 |         14        0.14       91.25
          . |        875        8.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016