Quarter US dollars 2004-12-31 207 2005-03-31 140 2005-06-30 185 2005-09-30 156 2005-12-31 -429 2006-03-31 871 2006-06-30 971 2006-09-30 714 2006-12-31 982 2007-03-31 2718 2007-06-30 1475 2007-09-30 1685 2007-12-31 1276 2008-03-31 1026 2008-06-30 995 2008-09-30 1714 2008-12-31 727 2009-03-31 1647 2009-06-30 4076 2009-09-30 3197 2009-12-31 2322 2010-03-31 2892 2010-06-30 1908 2010-09-30 3175 2010-12-31 2802 2011-03-31 2621 2011-06-30 1707 2011-09-30 1432 2011-12-31 3318 2012-03-31 4508 2012-06-30 1992 2012-09-30 9005 2012-12-31 6739 2013-03-31 14238 2013-06-30 8472 2013-09-30 8270 2013-12-31 3073 2014-03-31 3305 2014-06-30 2985 2014-09-30 4072 2014-12-31 1592 2015-03-31 1044 2015-06-30 624 2015-09-30 536 2015-12-31 363 2016-03-31 1005 2016-06-30 383 2016-09-30 504 2016-12-31 561 2017-03-31 438 2017-06-30 1512 2017-09-30 2352 2017-12-31 1527 2018-03-31 1708 2018-06-30 424 2018-09-30 524 2018-12-31 1310 2019-03-31 1359 2019-06-30 835 2019-09-30 701 2019-12-31 667 2020-03-31 192 2020-06-30 543 2020-09-30 419 2020-12-31 1310 2021-03-31 864 2021-06-30 1179 2021-09-30 1797 2021-12-31 185 2022-03-31 222 2022-06-30 141 2022-09-30 241 2022-12-31 109 2023-03-31 111 2023-06-30 113 2023-09-30 112