Name 

Description 

 

base77 

Historical old-law wage bases. 

 

baseHi 

Historical HI wage bases. 

 

baseOasdi 

Historical OASDI wage bases. 

 

cpiinc 

Historical benefit increases. 

 

fq 

Historical average wages. 

 

HI_BASE_YEAR 

Year when HI wage base first differs from OASDI base.