2. Graph the behavior of the civilian unemployment rate from 1961 until the present using monthly data. Can you see the periods of recession that occurred in 1969-1970, 1973-1975, 1980, 1981-1982, and 1990-1991? In terms of the unemployment rate, how does the 2001 recession compare in severity with those earlier down- turns? How does the behavior of the unemployment rate over the 1990s compare to its behavior in the 1960s, 1970s, and 1980s?