Quarter	US dollars
1986-09-30	11412
1986-12-31	10993
1987-03-31	11797
1987-06-30	12973
1987-09-30	14331
1987-12-31	14577
1988-03-31	14529
1988-06-30	15180
1988-09-30	18533
1988-12-31	19350
1989-03-31	19978
1989-06-30	20051
1989-09-30	22721
1989-12-31	24957
1990-03-31	25990
1990-06-30	25731
1990-09-30	28587
1990-12-31	28049
1991-03-31	23336
1991-06-30	23814
1991-09-30	26069
1991-12-31	27777
1992-03-31	28483
1992-06-30	30087
1992-09-30	32304
1992-12-31	27967
1993-03-31	28248
1993-06-30	28163
1993-09-30	29350
1993-12-31	26094
1994-03-31	28475
1994-06-30	28623
1994-09-30	33969
1994-12-31	35604
1995-03-31	37606
1995-06-30	36389
1995-09-30	40222
1995-12-31	42211
1996-03-31	44615
1996-06-30	44998
1996-09-30	47338
1996-12-31	49014
1997-03-31	46560
1997-06-30	48039
1997-09-30	159371
1997-12-31	179188
1998-03-31	180314
1998-06-30	185190
1998-09-30	187143
1998-12-31	185056