Figure $17-2$ tracks the unemployment rate in the years before and after the Panic of 1893 in the United States. the banking crisis of 1991 in Sweden, and the American financial crisis of 2008 .
a. In Figure $17-2,$ how many years after the Panic of 1893 did unemployment peak in the United States?
b. In Figure $17-2$, how many years after the banking crisis of 1991 did unemployment peak in Sweden?
c. In Figure $17-2$, how many years after the banking crisis of 2008 did unemployment peak in the United States?