Quarter Billions of US Dollars 1987-01-01 0.1388 1987-04-01 0.1388 1987-07-01 0.0888 1987-10-01 0.0888 1988-01-01 0.0888 1988-04-01 0.0988 1988-07-01 0.0938 1988-10-01 0.0888 1989-01-01 0.0888 1989-04-01 0.0888 1989-07-01 0.0888 1989-10-01 0.0888 1990-01-01 0.0888 1990-04-01 0.0888 1990-07-01 0.0888 1990-10-01 0.0888 1991-01-01 0.0888 1991-04-01 0.0888 1991-07-01 0.0888 1991-10-01 0.0888 1992-01-01 0.0888 1992-04-01 0.0888 1992-07-01 0.0888 1992-10-01 0.1228 1993-01-01 0.1198 1993-04-01 0.0888 1993-07-01 0.0888 1993-10-01 0.0888 1994-01-01 0.0888 1994-04-01 0.0888 1994-07-01 0.0888 1994-10-01 0.0888 1995-01-01 0.0888 1995-04-01 0.0888 1995-07-01 0.0888