Quarter US dollars 2004-12-31 390 2005-03-31 474 2005-06-30 409 2005-09-30 256 2005-12-31 311 2006-03-31 427 2006-06-30 394 2006-09-30 295 2006-12-31 262 2007-03-31 282 2007-06-30 550 2007-09-30 -37 2007-12-31 86 2008-03-31 475 2008-06-30 125 2008-09-30 128 2008-12-31 -2999 2009-03-31 -2810 2009-06-30 -2350 2009-09-30 -1380 2009-12-31 -231 2010-03-31 -511 2010-06-30 -648 2010-09-30 -835 2010-12-31 -99 2011-03-31 -43 2011-06-30 -1185 2011-09-30 16 2011-12-31 606 2012-03-31 -332 2012-06-30 -270 2012-09-30 -265 2012-12-31 398 2013-03-31 448 2013-06-30 -196 2013-09-30 73 2013-12-31 549 2014-03-31 43 2014-06-30 279 2014-09-30 263 2014-12-31 306 2015-03-31 500 2015-06-30 593 2015-09-30 859 2015-12-31 218 2016-03-31 489 2016-06-30 -24 2016-09-30 -27 2016-12-31 -15 2017-03-31 -38 2017-06-30 -65 2017-09-30 -154 2017-12-31 -15 2018-03-31 31 2018-06-30 137 2018-09-30 154 2018-12-31 -29 2019-03-31 -46 2019-06-30 -18 2019-09-30 68 2019-12-31 108 2020-03-31 46 2020-06-30 127 2020-09-30 167 2020-12-31 96 2021-03-31 103 2021-06-30 82 2021-09-30 57 2021-12-31 81 2022-03-31 118 2022-06-30 85 2022-09-30 54 2022-12-31 14 2023-03-31 94 2023-06-30 98 2023-09-30 111