Quarter	US dollars
1986-09-30	579102
1986-12-31	598161
1987-03-31	623218
1987-06-30	647376
1987-09-30	666492
1987-12-31	720778
1988-03-31	715776
1988-06-30	709528
1988-09-30	728792
1988-12-31	734862
1989-03-31	754848
1989-06-30	734958
1989-09-30	767674
1989-12-31	791309
1990-03-31	805432
1990-06-30	810658
1990-09-30	872446
1990-12-31	927681
1991-03-31	861249
1991-06-30	804216
1991-09-30	842247
1991-12-31	842145
1992-03-31	790988
1992-06-30	818880
1992-09-30	874359
1992-12-31	845620
1993-03-31	851237
1993-06-30	832255
1993-09-30	844048
1993-12-31	866779
1994-03-31	872597
1994-06-30	896547
1994-09-30	938151
1994-12-31	973144
1995-03-31	1028819
1995-06-30	1026660
1995-09-30	1016059
1995-12-31	1053228
1996-03-31	1051829
1996-06-30	1048277
1996-09-30	1077825
1996-12-31	1110346
1997-03-31	1127788
1997-06-30	1130003
1997-09-30	1152333
1997-12-31	1266621
1998-03-31	1248694
1998-06-30	1294529
1998-09-30	1424014
1998-12-31	1388571