Based on the information provided, the correct conclusion is: "The economy suffered a setback in 2009 before rebounding in 2010."
The graph indicates a negative growth rate (negative 3 percent) in 2009, suggesting a setback or contraction in the economy. However, in 2010, the growth rate is positive at 2.3 percent, indicating a rebound or recovery in the economy.
The subsequent information about 2011 (1.9 percent) does not necessarily suggest a continued setback, as it's a positive growth rate, although lower than in 2010. Therefore, the most accurate conclusion is that there was a setback in 2009 followed by a rebound in 2010.
Based on the information provided, the correct conclusion is: "The economy suffered a setback in 2009 before rebounding in 2010."