Quarter US dollars 2004-12-31 125 2005-03-31 132 2005-06-30 4 2005-09-30 186 2005-12-31 230 2006-03-31 382 2006-06-30 422 2006-09-30 418 2006-12-31 474 2007-03-31 481 2007-06-30 524 2007-09-30 577 2007-12-31 589 2008-03-31 588 2008-06-30 581 2008-09-30 380 2008-12-31 321 2009-03-31 355 2009-06-30 425 2009-09-30 393 2009-12-31 284 2010-03-31 267 2010-06-30 269 2010-09-30 277 2010-12-31 388 2011-03-31 391 2011-06-30 406 2011-09-30 410 2011-12-31 414 2012-03-31 406 2012-06-30 405 2012-09-30 417 2012-12-31 417 2013-03-31 402 2013-06-30 55 2013-09-30 2 2013-12-31 3 2014-03-31 0 2014-06-30 638 2014-09-30 768 2014-12-31 339 2015-03-31 330 2015-06-30 348 2015-09-30 114 2015-12-31 82 2016-03-31 83 2016-06-30 78 2016-09-30 77 2016-12-31 80 2017-03-31 375 2017-06-30 394 2017-09-30 345 2017-12-31 347 2018-03-31 237 2018-06-30 298 2018-09-30 287 2018-12-31 383 2019-03-31 388 2019-06-30 383 2019-09-30 371 2019-12-31 419 2020-03-31 378 2020-06-30 386 2020-09-30 426 2020-12-31 325 2021-03-31 328 2021-06-30 337 2021-09-30 328 2021-12-31 327 2022-03-31 325 2022-06-30 301 2022-09-30 357 2022-12-31 298 2023-03-31 330 2023-06-30 330 2023-09-30 287