LPL Financial Research forecasts U.S. economic growth, as measured by real gross domestic product (GDP), to accelerate to 3% in 2014 from the 2% pace of recent years. This marks our first above-consensus annual forecast for GDP in many years. As of mid-December 2013, the Bloomberg-tracked consensus estimate by economists for 2014 was 2.6%. If achieved, the 3% pace of GDP growth in 2014 would be the best performance for the U.S. economy since 2005, when the economy posted 3.4% growth. While a strong growth rate in comparison to the past 10 years, the 3% growth rate would simply equal the average pace of real GDP growth since the end of WWII….