Quarter	Millions of US Dollars
2000-01-01	132
2000-04-01	239
2000-07-01	329
2000-10-01	313
2001-01-01	502
2001-04-01	637
2001-07-01	536
2001-10-01	591
2002-01-01	664
2002-04-01	784
2002-07-01	739
2002-10-01	778
2003-01-01	798
2003-04-01	903
2003-07-01	906
2003-10-01	1061
2004-01-01	1042
2004-04-01	1358
2004-07-01	1298
2004-10-01	1566
2005-01-01	2227
2005-04-01	2183
2005-07-01	2035
2005-10-01	1966
2006-01-01	1992
2006-04-01	2147
2006-07-01	2061
2006-10-01	2224
2007-01-01	2398
2007-04-01	2373
2007-07-01	2341
2007-10-01	2358
2008-01-01	2532
2008-04-01	2570
2008-07-01	2155
2008-10-01	2751
2009-01-01	2682
2009-04-01	2991
2009-07-01	3412
2009-10-01	3711
2010-01-01	3850
2010-04-01	3656
2010-07-01	3778
2010-10-01	3682
2011-01-01	4415
2011-04-01	4032
2011-07-01	3442
2011-10-01	3463
2012-01-01	3580
2012-04-01	3385
2012-07-01	3194
2012-10-01	3303
2013-01-01	3788
2013-04-01	3890
2013-07-01	3639
2013-10-01	3969
2014-01-01	4330
2014-04-01	4420
2014-07-01	3990
2014-10-01	3905
2015-01-01	3132
2015-04-01	3253
2015-07-01	2897
2015-10-01	2670
2016-01-01	2964
2016-04-01	2605
2016-07-01	2607
2016-10-01	2445
2017-01-01	2613
2017-04-01	2917
2017-07-01	3003
2017-10-01	2804
2018-01-01	3320