Quarter	Millions of US Dollars
1993-10-01	1839
1994-01-01	2109
1994-04-01	2194
1994-07-01	2408
1994-10-01	2413
1995-01-01	2297
1995-04-01	2585
1995-07-01	2863
1995-10-01	4364
1996-01-01	5143
1996-04-01	5620
1996-07-01	5556
1996-10-01	4999
1997-01-01	4968
1997-04-01	5208
1997-07-01	4731
1997-10-01	4130
1998-01-01	4153
1998-04-01	3405
1998-07-01	3311
1998-10-01	2970
1999-01-01	3345
1999-04-01	3076
1999-07-01	3024
1999-10-01	3689
2000-01-01	3578
2000-04-01	3709
2000-07-01	3585
2000-10-01	4049
2001-01-01	3975
2001-04-01	3754
2001-07-01	3175
2001-10-01	2636
2002-01-01	2634
2002-04-01	2205
2002-07-01	2151
2002-10-01	1901
2003-01-01	1644
2003-04-01	1182
2003-07-01	713
2003-10-01	1193
2004-01-01	1509
2004-04-01	2711
2004-07-01	3527
2004-10-01	3384
2005-01-01	4361
2005-04-01	3912
2005-07-01	3747
2005-10-01	3480
2006-01-01	2416
2006-04-01	2614
2006-07-01	2203
2006-10-01	1883
2007-01-01	2224
2007-04-01	2371
2007-07-01	1738
2007-10-01	1518
2008-01-01	1046
2008-04-01	848
2008-07-01	702
2008-10-01	1457
2009-01-01	2211
2009-04-01	1345
2009-07-01	1787
2009-10-01	2478
2010-01-01	2066
2010-04-01	2017
2010-07-01	1938
2010-10-01	2756
2011-01-01	2360
2011-04-01	1638
2011-07-01	2493
2011-10-01	1713
2012-01-01	1658
2012-04-01	1618
2012-07-01	1452
2012-10-01	1719
2013-01-01	1346
2013-04-01	1083
2013-07-01	1226
2013-10-01	1399
2014-01-01	1733
2014-04-01	1468
2014-07-01	1333
2014-10-01	1234
2015-01-01	1073
2015-04-01	1006
2015-07-01	908
2015-10-01	891
2016-01-01	1298
2016-04-01	1468
2016-07-01	1911
2016-10-01	2020
2017-01-01	1818
2017-04-01	1655
2017-07-01	2108
2017-10-01	2031
2018-01-01	2511