In these cases, the wavefunctions of the system in question are represented as vectors, the components of which correspond to coefficients in a linear combination of the basis functions in the basis set used. The operators are then represented as matrices, (rank two tensors), in this finite basis.
General data can be found below: The highest rate for a single month is shared by November and December of 1982 with an unemployment rate of 10.8%. The year with the highest average unemployment rate was 1982 with an average unemployment rate of 9.71%. --. The lowest rate for a single month is shared by May and June of 1953 with an unemployment rate of 2.5%. The year with the lowest average unemployment rate was 1953 with an average unemployment rate of 2.93%.
Most recently, the unemployment rate fluctuated wildly, from a low of 4.7 percent in 2008 to a peak of 10.1 percent in 2009, after the U.S. housing bubble burst and Wall Street saw collapses unlike those seen since the Great Depression in the 1920s and 1930s.