Quarter	US dollars
1986-09-30	89080
1986-12-31	87014
1987-03-31	88239
1987-06-30	89403
1987-09-30	93855
1987-12-31	98755
1988-03-31	93417
1988-06-30	93655
1988-09-30	95630
1988-12-31	93869
1989-03-31	95840
1989-06-30	96381
1989-09-30	98311
1989-12-31	98428
1990-03-31	98922
1990-06-30	97482
1990-09-30	101295
1990-12-31	103612
1991-03-31	97412
1991-06-30	93198
1991-09-30	95101
1991-12-31	95102
1992-03-31	95141
1992-06-30	104682
1992-09-30	99361
1992-12-31	98687
1993-03-31	91634
1993-06-30	91856
1993-09-30	89648
1993-12-31	97066
1994-03-31	93635
1994-06-30	95824
1994-09-30	103723
1994-12-31	101062
1995-03-31	104546
1995-06-30	100612
1995-09-30	100694
1995-12-31	101227
1996-03-31	104619
1996-06-30	107213
1996-09-30	112497
1996-12-31	117372
1997-03-31	113810
1997-06-30	122783
1997-09-30	132598
1997-12-31	149367
1998-03-31	136628
1998-06-30	142121
1998-09-30	160109
1998-12-31	173975