Quarter	US dollars
1986-09-30	405769
1986-12-31	415261
1987-03-31	432671
1987-06-30	448592
1987-09-30	451221
1987-12-31	488519
1988-03-31	494446
1988-06-30	486582
1988-09-30	503914
1988-12-31	503049
1989-03-31	517167
1989-06-30	503191
1989-09-30	536534
1989-12-31	554442
1990-03-31	563388
1990-06-30	568455
1990-09-30	602592
1990-12-31	649861
1991-03-31	592731
1991-06-30	553680
1991-09-30	574562
1991-12-31	593243
1992-03-31	557860
1992-06-30	580359
1992-09-30	626699
1992-12-31	609709
1993-03-31	615094
1993-06-30	601605
1993-09-30	614387
1993-12-31	644926
1994-03-31	649893
1994-06-30	665499
1994-09-30	701060
1994-12-31	737351
1995-03-31	785740
1995-06-30	782534
1995-09-30	761409
1995-12-31	784286
1996-03-31	757617
1996-06-30	758212
1996-09-30	782437
1996-12-31	814395
1997-03-31	808333
1997-06-30	801275
1997-09-30	799947
1997-12-31	912135
1998-03-31	879650
1998-06-30	915568
1998-09-30	1006284
1998-12-31	1030953