Quarter Billions of US Dollars 1986-01-01 0.02227 1986-04-01 0.02424 1986-07-01 0.02604 1986-10-01 0.02514 1987-01-01 0.02743 1987-04-01 0.02721 1987-07-01 0.02733 1987-10-01 0.03239 1988-01-01 0.03190 1988-04-01 0.06042 1988-07-01 0.05946 1988-10-01 0.06357 1989-01-01 0.06058 1989-04-01 0.05552 1989-07-01 0.09332 1989-10-01 0.09062 1990-01-01 0.08270 1990-04-01 0.08502 1990-07-01 0.09434 1990-10-01 0.09673 1991-01-01 0.09220 1991-04-01 0.09427 1991-07-01 0.09785 1991-10-01 0.10383 1992-01-01 0.09760 1992-04-01 0.10359 1992-07-01 0.10906 1992-10-01 0.10421 1993-01-01 0.07735 1993-04-01 0.08431 1993-07-01 0.08559 1993-10-01 0.08046 1994-01-01 0.08725 1994-04-01 0.09086 1994-07-01 0.04063 1994-10-01 0.04010 1995-01-01 0.04477