Quarter	Millions of US Dollars
2009-01-01	15886.021000000000
2009-04-01	14153.501000000000
2009-07-01	12831.193000000001
2009-10-01	13478.649000000000
2010-01-01	12812.028000000000
2010-04-01	12242.106000000002
2010-07-01	13182.656000000000
2010-10-01	12087.955000000000
2011-01-01	9222.109000000000
2011-04-01	8802.267000000000
2011-07-01	7541.563000000000
2011-10-01	6727.105000000000
2012-01-01	6238.696999999999
2012-04-01	6051.029000000000
2012-07-01	6272.656000000000
2012-10-01	6702.610000000000
2013-01-01	7092.406000000000
2013-04-01	7142.215000000000
2013-07-01	7122.226000000000
2013-10-01	7221.121000000000
2014-01-01	6547.348000000001
2014-04-01	6605.099000000000
2014-07-01	6339.439000000000
2014-10-01	6283.675000000000
2015-01-01	6228.965999999999
2015-04-01	6100.655000000000
2015-07-01	6045.641000000000
2015-10-01	5645.025000000000
2016-01-01	6073.283000000000
2016-04-01	6115.438000000000
2016-07-01	6054.566000000000
2016-10-01	5806.871000000000
2017-01-01	5700.709000000000
2017-04-01	6299.441000000000
2017-07-01	6682.689000000000
2017-10-01	6305.249000000000
2018-01-01	6361.522000000000