Quarter	Millions of US Dollars
2000-10-01	390
2001-10-01	376
2002-10-01	630
2003-10-01	1344
2004-10-01	2484
2005-10-01	2065
2006-10-01	2170
2007-10-01	2638
2008-01-01	3282
2008-04-01	3133
2008-07-01	2851
2008-10-01	2652
2009-01-01	2509
2009-04-01	2626
2009-07-01	2720
2009-10-01	1578
2010-01-01	1396
2010-04-01	1200
2010-07-01	1330
2010-10-01	1330
2011-01-01	1283
2011-04-01	1295
2011-07-01	1527
2011-10-01	1471
2012-01-01	1491
2012-04-01	1766
2012-07-01	1814
2012-10-01	1838
2013-01-01	1772
2013-04-01	1958
2013-07-01	2031
2013-10-01	2120
2014-01-01	2239
2014-04-01	2207
2014-07-01	1969
2014-10-01	1945
2015-01-01	1666
2015-04-01	1777
2015-07-01	1846
2015-10-01	1789
2016-01-01	1873
2016-04-01	1820
2016-07-01	1818
2016-10-01	1733
2017-01-01	1758
2017-04-01	1956
2017-07-01	2064
2017-10-01	2243
2018-01-01	2328