Quarter US dollars 2004-12-31 156 2005-03-31 51 2005-06-30 39 2005-09-30 25 2005-12-31 5 2006-03-31 28 2006-06-30 33 2006-09-30 37 2006-12-31 115 2007-03-31 149 2007-06-30 211 2007-09-30 139 2007-12-31 165 2008-03-31 137 2008-06-30 139 2008-09-30 73 2008-12-31 20 2009-03-31 0 2009-06-30 128 2009-09-30 170 2009-12-31 92 2010-03-31 344 2010-06-30 498 2010-09-30 440 2010-12-31 329 2011-03-31 324 2011-06-30 220 2011-09-30 140 2011-12-31 127 2012-03-31 51 2012-06-30 30 2012-09-30 74 2012-12-31 31 2013-03-31 32 2013-06-30 39 2013-09-30 45 2013-12-31 785 2014-03-31 954 2014-06-30 1019 2014-09-30 809 2014-12-31 726 2015-03-31 680 2015-06-30 736 2015-09-30 816 2015-12-31 842 2016-03-31 832 2016-06-30 811 2016-09-30 725 2016-12-31 656 2017-03-31 754 2017-06-30 829 2017-09-30 834 2017-12-31 811 2018-03-31 914 2018-06-30 846 2018-09-30 802 2018-12-31 778 2019-03-31 1221 2019-06-30 1199 2019-09-30 1085 2019-12-31 1317 2020-03-31 1284 2020-06-30 1462 2020-09-30 1484 2020-12-31 1925 2021-03-31 1574 2021-06-30 1524 2021-09-30 1483 2021-12-31 2454 2022-03-31 2700 2022-06-30 2493 2022-09-30 2207 2022-12-31 2372 2023-03-31 2261 2023-06-30 2341 2023-09-30 2174