Quarter	US dollars
1986-09-30	460
1986-12-31	537
1987-03-31	631
1987-06-30	608
1987-09-30	772
1987-12-31	823
1988-03-31	764
1988-06-30	871
1988-09-30	739
1988-12-31	814
1989-03-31	733
1989-06-30	720
1989-09-30	846
1989-12-31	917
1990-03-31	720
1990-06-30	653
1990-09-30	575
1990-12-31	520
1991-03-31	738
1991-06-30	721
1991-09-30	744
1991-12-31	956
1992-03-31	783
1992-06-30	692
1992-09-30	1533
1992-12-31	593
1993-03-31	620
1993-06-30	647
1993-09-30	331
1993-12-31	384
1994-03-31	273
1994-06-30	285
1994-09-30	222
1994-12-31	302
1995-03-31	223
1995-06-30	186
1995-09-30	139
1995-12-31	150
1996-03-31	168
1996-06-30	150
1996-09-30	234
1996-12-31	218
1997-03-31	245
1997-06-30	207
1997-09-30	102
1997-12-31	46
1998-03-31	28
1998-06-30	246
1998-09-30	114
1998-12-31	70
1999-03-31	253
1999-06-30	179
1999-09-30	61
1999-12-31	320
2000-03-31	285
2000-06-30	214
2000-09-30	1025
2000-12-31	1729
2001-03-31	459
2001-06-30	41
2001-09-30	914
2001-12-31	599
2002-03-31	496
2002-06-30	438
2002-09-30	310
2002-12-31	56
2003-03-31	32
2003-06-30	250
2003-09-30	657
2003-12-31	1454
2004-03-31	1211
2004-06-30	2330
2004-09-30	1028
2004-12-31	1055
2005-03-31	1884
2005-06-30	1435
2005-09-30	2448
2005-12-31	2734
2006-03-31	1917
2006-06-30	1302
2006-09-30	1170
2006-12-31	1574
2007-03-31	1502
2007-06-30	932
2007-09-30	3597
2007-12-31	2451
2008-03-31	1986
2008-06-30	1745
2008-09-30	1225
2008-12-31	1110
2009-03-31	1469
2009-06-30	782
2009-09-30	358
2009-12-31	288
2010-03-31	529
2010-06-30	135
2010-09-30	2620
2010-12-31	1321
2011-03-31	403
2011-06-30	258
2011-09-30	663
2011-12-31	275
2012-03-31	32
2012-06-30	4
2012-09-30	24
2012-12-31	0
2013-03-31	2904
2013-06-30	1490
2013-09-30	1291
2013-12-31	1407
2014-03-31	1658
2014-06-30	1612
2014-09-30	86
2014-12-31	1455
2015-03-31	1947
2015-06-30	1152
2015-09-30	1245
2015-12-31	1170