How has the use of credit evolved in key sectors of the economy? Plot as ratios to total credit market debt outstanding (FRED code: TCMDO) the debt of: (a) households (FRED code: HSTCMDODNS); (b) nonfinancial corporate businesses (FRED code: NCBTCMDODNS); and (c) the domestic financial sector (FRED code: TCMDODFS). Compared with the prior two decades, account for the pattern of debt in the household sector since 2000. What do the downturns during the financial crisis in the household and financial sector ratios mean in terms of leverage? What important sector is omitted from this plot?