Quarter	US dollars
1986-09-30	68011
1986-12-31	74188
1987-03-31	84308
1987-06-30	84409
1987-09-30	85032
1987-12-31	105878
1988-03-31	99594
1988-06-30	93000
1988-09-30	94813
1988-12-31	104890
1989-03-31	110586
1989-06-30	112382
1989-09-30	116286
1989-12-31	133348
1990-03-31	146632
1990-06-30	150901
1990-09-30	162081
1990-12-31	176962
1991-03-31	159793
1991-06-30	143888
1991-09-30	157585
1991-12-31	166706
1992-03-31	151161
1992-06-30	157105
1992-09-30	190683
1992-12-31	173318
1993-03-31	184230
1993-06-30	182003
1993-09-30	185917
1993-12-31	189142
1994-03-31	187178
1994-06-30	194667
1994-09-30	197319
1994-12-31	211723
1995-03-31	230895
1995-06-30	234548
1995-09-30	229570
1995-12-31	237678
1996-03-31	235156
1996-06-30	226107
1996-09-30	229191
1996-12-31	229296
1997-03-31	211838
1997-06-30	200752
1997-09-30	216874
1997-12-31	221254
1998-03-31	239607
1998-06-30	235874
1998-09-30	256445
1998-12-31	220380