Quarter US dollars 2004-12-31 42 2005-03-31 2 2005-06-30 2 2005-09-30 9 2005-12-31 9 2006-03-31 2 2006-06-30 4 2006-09-30 4 2006-12-31 18 2007-03-31 24 2007-06-30 32 2007-09-30 24 2007-12-31 16 2008-03-31 6 2008-06-30 356 2008-09-30 328 2008-12-31 23 2009-03-31 26 2009-06-30 5 2009-09-30 123 2009-12-31 153 2010-03-31 393 2010-06-30 705 2010-09-30 833 2010-12-31 471 2011-03-31 572 2011-06-30 305 2011-09-30 313 2011-12-31 320 2012-03-31 438 2012-06-30 511 2012-09-30 82 2012-12-31 60 2013-03-31 288 2013-06-30 315 2013-09-30 65 2013-12-31 40 2014-03-31 2181 2014-06-30 2313 2014-09-30 2132 2014-12-31 1448 2015-03-31 1722 2015-06-30 1625 2015-09-30 765 2015-12-31 209 2016-03-31 40 2016-06-30 93 2016-09-30 100 2016-12-31 30 2017-03-31 199 2017-06-30 236 2017-09-30 97 2017-12-31 91 2018-03-31 199 2018-06-30 444 2018-09-30 420 2018-12-31 137 2019-03-31 119 2019-06-30 113 2019-09-30 137 2019-12-31 284 2020-03-31 265 2020-06-30 216 2020-09-30 230 2020-12-31 116 2021-03-31 181 2021-06-30 198 2021-09-30 120 2021-12-31 62 2022-03-31 86 2022-06-30 47 2022-09-30 59 2022-12-31 43 2023-03-31 109 2023-06-30 143 2023-09-30 211