Quarter	US dollars
1986-09-30	555092
1986-12-31	571430
1987-03-31	600387
1987-06-30	623938
1987-09-30	653825
1987-12-31	722210
1988-03-31	711725
1988-06-30	701512
1988-09-30	723319
1988-12-31	739722
1989-03-31	744678
1989-06-30	728776
1989-09-30	760611
1989-12-31	787412
1990-03-31	804836
1990-06-30	821587
1990-09-30	900268
1990-12-31	935928
1991-03-31	882913
1991-06-30	834679
1991-09-30	861219
1991-12-31	858218
1992-03-31	816941
1992-06-30	852536
1992-09-30	931037
1992-12-31	886668
1993-03-31	877113
1993-06-30	866833
1993-09-30	878515
1993-12-31	901757
1994-03-31	922936
1994-06-30	956573
1994-09-30	1001399
1994-12-31	1038819
1995-03-31	1096586
1995-06-30	1105406
1995-09-30	1104995
1995-12-31	1142638
1996-03-31	1147355
1996-06-30	1147659
1996-09-30	1186909
1996-12-31	1222365
1997-03-31	1263816
1997-06-30	1268158
1997-09-30	1319386
1997-12-31	1476801
1998-03-31	1476745
1998-06-30	1537877
1998-09-30	1698215
1998-12-31	1649558