Quarter Billions of US Dollars 1987-01-01 0.07754 1987-04-01 0.07645 1987-07-01 0.07631 1987-10-01 0.08234 1988-01-01 0.05443 1988-04-01 0.05184 1988-07-01 0.02391 1988-10-01 0.02527 1989-01-01 0.02289 1989-04-01 0.02271 1989-07-01 0.02349 1989-10-01 0.02457 2013-10-01 0.30000 2014-01-01 0.30000 2014-04-01 0.30000 2014-07-01 0.30000 2014-10-01 0.30000 2015-01-01 0.30000 2015-04-01 0.30000