Quarter	US dollars
1986-09-30	127449
1986-12-31	131285
1987-03-31	132914
1987-06-30	132798
1987-09-30	131029
1987-12-31	136071
1988-03-31	132855
1988-06-30	128629
1988-09-30	125736
1988-12-31	128229
1989-03-31	123298
1989-06-30	121710
1989-09-30	121221
1989-12-31	121314
1990-03-31	117070
1990-06-30	116016
1990-09-30	118114
1990-12-31	114609
1991-03-31	107561
1991-06-30	105308
1991-09-30	107393
1991-12-31	108806
1992-03-31	109279
1992-06-30	113609
1992-09-30	115236
1992-12-31	108879
1993-03-31	109080
1993-06-30	107737
1993-09-30	107669
1993-12-31	111367
1994-03-31	110466
1994-06-30	114257
1994-09-30	115586
1994-12-31	114706
1995-03-31	111850
1995-06-30	114803
1995-09-30	118189
1995-12-31	123989
1996-03-31	129313
1996-06-30	136662
1996-09-30	144234
1996-12-31	153372
1997-03-31	163492
1997-06-30	174953
1997-09-30	198081
1997-12-31	192351
1998-03-31	199609
1998-06-30	201802
1998-09-30	193083
1998-12-31	193214