Quarter US dollars 2004-12-31 48 2005-03-31 47 2005-06-30 29 2005-09-30 19 2005-12-31 19 2006-03-31 9 2006-06-30 9 2006-09-30 9 2006-12-31 10 2007-03-31 10 2007-06-30 10 2007-09-30 10 2007-12-31 10 2008-03-31 10 2008-06-30 10 2008-09-30 21 2008-12-31 10 2009-03-31 10 2009-06-30 87 2009-09-30 85 2009-12-31 86 2010-03-31 80 2010-06-30 546 2010-09-30 592 2010-12-31 83 2011-03-31 85 2011-06-30 85 2011-09-30 83 2011-12-31 82 2012-03-31 85 2012-06-30 83 2012-09-30 86 2012-12-31 86 2013-03-31 80 2013-06-30 80 2013-09-30 86 2013-12-31 86 2014-03-31 337 2014-06-30 345 2014-09-30 327 2014-12-31 392 2015-03-31 300 2015-06-30 318 2015-09-30 360 2015-12-31 351 2016-03-31 339 2016-06-30 317 2016-09-30 305 2016-12-31 288 2017-03-31 293 2017-06-30 303 2017-09-30 311 2017-12-31 332 2018-03-31 323 2018-06-30 306 2018-09-30 303 2018-12-31 295 2019-03-31 300 2019-06-30 291 2019-09-30 281 2019-12-31 202 2020-03-31 125 2020-06-30 124 2020-09-30 128 2020-12-31 168 2021-03-31 272 2021-06-30 340 2021-09-30 336 2021-12-31 358 2022-03-31 415 2022-06-30 594 2022-09-30 601 2022-12-31 648 2023-03-31 676 2023-06-30 695 2023-09-30 644