Before Great Recession in 2008-9, unemployment rate in U.S. was 4%. At the end of 2009, unemployment rate in U.S. was 9.9 percent and labor force participation rate was 63 percent. In mid 2010, unemployment rate was still at 9.9 percent, however, labor force participation rate went up to 65.2 percent. In mid 2010, many economic analysts were saying that U.S. economy is recovering as anticipation for labor market recovery is high. Why many economists are assessing that the economy is recovering when unemployment rate stays at the same rate at 9.9 percent? Explain succinctly.