Quarter US dollars 2004-12-31 211 2005-03-31 198 2005-06-30 220 2005-09-30 241 2005-12-31 242 2006-03-31 290 2006-06-30 277 2006-09-30 265 2006-12-31 294 2007-03-31 302 2007-06-30 297 2007-09-30 310 2007-12-31 313 2008-03-31 368 2008-06-30 346 2008-09-30 315 2008-12-31 329 2009-03-31 287 2009-06-30 267 2009-09-30 265 2009-12-31 276 2010-03-31 259 2010-06-30 277 2010-09-30 266 2010-12-31 285 2011-03-31 285 2011-06-30 350 2011-09-30 318 2011-12-31 320 2012-03-31 377 2012-06-30 314 2012-09-30 323 2012-12-31 309 2013-03-31 375 2013-06-30 315 2013-09-30 395 2013-12-31 398 2014-03-31 462 2014-06-30 361 2014-09-30 349 2014-12-31 415 2015-03-31 514 2015-06-30 387 2015-09-30 348 2015-12-31 369 2016-03-31 403 2016-06-30 435 2016-09-30 420 2016-12-31 327 2017-03-31 388 2017-06-30 485 2017-09-30 542 2017-12-31 457 2018-03-31 436 2018-06-30 473 2018-09-30 467 2018-12-31 433 2019-03-31 509 2019-06-30 482 2019-09-30 517 2019-12-31 491 2020-03-31 388 2020-06-30 436 2020-09-30 461 2020-12-31 505 2021-03-31 581 2021-06-30 604 2021-09-30 556 2021-12-31 573 2022-03-31 653 2022-06-30 471 2022-09-30 454 2022-12-31 723 2023-03-31 695 2023-06-30 708 2023-09-30 786