Quarter US dollars 2004-12-31 146 2005-03-31 149 2005-06-30 134 2005-09-30 143 2005-12-31 141 2006-03-31 144 2006-06-30 141 2006-09-30 176 2006-12-31 137 2007-03-31 245 2007-06-30 357 2007-09-30 153 2007-12-31 177 2008-03-31 155 2008-06-30 175 2008-09-30 175 2008-12-31 240 2009-03-31 314 2009-06-30 387 2009-09-30 409 2009-12-31 459 2010-03-31 423 2010-06-30 1797 2010-09-30 821 2010-12-31 1116 2011-03-31 1154 2011-06-30 1241 2011-09-30 1344 2011-12-31 1037 2012-03-31 817 2012-06-30 707 2012-09-30 843 2012-12-31 880 2013-03-31 721 2013-06-30 761 2013-09-30 1093 2013-12-31 613 2014-03-31 652 2014-06-30 675 2014-09-30 598 2014-12-31 559 2015-03-31 797 2015-06-30 458 2015-09-30 406 2015-12-31 384 2016-03-31 364 2016-06-30 340 2016-09-30 323 2016-12-31 322 2017-03-31 263 2017-06-30 2889 2017-09-30 2613 2017-12-31 2505 2018-03-31 2644 2018-06-30 2733 2018-09-30 2581 2018-12-31 2237 2019-03-31 2477 2019-06-30 2355 2019-09-30 2306 2019-12-31 2388 2020-03-31 2523 2020-06-30 2075 2020-09-30 1899 2020-12-31 2064 2021-03-31 2340 2021-06-30 2400 2021-09-30 2348 2021-12-31 2410 2022-03-31 2436 2022-06-30 2114 2022-09-30 1800 2022-12-31 1741 2023-03-31 1382 2023-06-30 1358 2023-09-30 1407