Quarter	US dollars
1986-09-30	14698
1986-12-31	15905
1987-03-31	17916
1987-06-30	18381
1987-09-30	19802
1987-12-31	22472
1988-03-31	24014
1988-06-30	20636
1988-09-30	19664
1988-12-31	19927
1989-03-31	25244
1989-06-30	27358
1989-09-30	27973
1989-12-31	33310
1990-03-31	41734
1990-06-30	41594
1990-09-30	47666
1990-12-31	54545
1991-03-31	54317
1991-06-30	51607
1991-09-30	57545
1991-12-31	61922
1992-03-31	60505
1992-06-30	67163
1992-09-30	71489
1992-12-31	69000
1993-03-31	72036
1993-06-30	70574
1993-09-30	76728
1993-12-31	73038
1994-03-31	76866
1994-06-30	78329
1994-09-30	76415
1994-12-31	75401
1995-03-31	84167
1995-06-30	84639
1995-09-30	82153
1995-12-31	78002
1996-03-31	78269
1996-06-30	77614
1996-09-30	74076
1996-12-31	69699
1997-03-31	74547
1997-06-30	71513
1997-09-30	75055
1997-12-31	65189
1998-03-31	83022
1998-06-30	80111
1998-09-30	87985
1998-12-31	64389