Quarter	US dollars
1986-09-30	442708
1986-12-31	455444
1987-03-31	479114
1987-06-30	502401
1987-09-30	529295
1987-12-31	585879
1988-03-31	574012
1988-06-30	570318
1988-09-30	595502
1988-12-31	602285
1989-03-31	608338
1989-06-30	592541
1989-09-30	614092
1989-12-31	634898
1990-03-31	644183
1990-06-30	653618
1990-09-30	715809
1990-12-31	747629
1991-03-31	697513
1991-06-30	651669
1991-09-30	658239
1991-12-31	660515
1992-03-31	618908
1992-06-30	640658
1992-09-30	694989
1992-12-31	663625
1993-03-31	635004
1993-06-30	627089
1993-09-30	638494
1993-12-31	654529
1994-03-31	675939
1994-06-30	714148
1994-09-30	754895
1994-12-31	781948
1995-03-31	809764
1995-06-30	807202
1995-09-30	803003
1995-12-31	820018
1996-03-31	813934
1996-06-30	802876
1996-09-30	814865
1996-12-31	845106
1997-03-31	871388
1997-06-30	887196
1997-09-30	935837
1997-12-31	1040826
1998-03-31	1016779
1998-06-30	1033858
1998-09-30	1160658
1998-12-31	1159278