Theaggregate effectcontributedabout as much to post-taxreturnon equitylast year as was lost to writedowns, and dwarfed the boost to returns from costcontrol and bonuscuts.
Interestingly, while majority parties in both the house of Representatives and the Senate didn't seem to have much impact onequity market returns, on average, the party affiliation of the President did: the mean return of the stock market during years with a Democratic president averaged 15.1%, while with Republican presidents, it averaged only 8.6%.