Despite some well-founded concerns that the S&P 500 (INDEXSP:.INX) is currently overbought, if this recovery follows historical patterns, the market will continue to grow and investors shouldn’t be looking to pull out, according to a report from Canaccord Genuity analysts Tony Dwyer and Michael Welch. Canaccord: S&P 500 will increase despite weak top-line growth Going back to the 1980s and 1990s, when the market was at this point in the two previous recoveries top-line growth for the S&P 500 (INDEXSP:.INX) was at or below the current year-on-year growth rate. Whatever noise there might be in the market, the analysts also show…