The S&P 500 is enjoying a terrific bull run in 2013 and is up +10.2% year-to-date and up +13.6% over a one-year period. While the actions of various central banks have helped drive the index to a new all-time high, there other factors at hand that have helped boost the index. One has been the appreciation in value of the US dollar. Strong Dollar = Strong Consumption and consumption helps drive global growth. 

S&P 500: The Sky's The Limit - SPXytd