Quarter US dollars 2004-12-31 244 2005-03-31 181 2005-06-30 204 2005-09-30 269 2005-12-31 270 2006-03-31 252 2006-06-30 307 2006-09-30 446 2006-12-31 305 2007-03-31 510 2007-06-30 658 2007-09-30 267 2007-12-31 269 2008-03-31 354 2008-06-30 344 2008-09-30 346 2008-12-31 295 2009-03-31 295 2009-06-30 441 2009-09-30 414 2009-12-31 355 2010-03-31 335 2010-06-30 290 2010-09-30 299 2010-12-31 302 2011-03-31 287 2011-06-30 289 2011-09-30 249 2011-12-31 278 2012-03-31 420 2012-06-30 447 2012-09-30 271 2012-12-31 319 2013-03-31 305 2013-06-30 299 2013-09-30 188 2013-12-31 200 2014-03-31 223 2014-06-30 253 2014-09-30 274 2014-12-31 245 2015-03-31 144 2015-06-30 121 2015-09-30 212 2015-12-31 228 2016-03-31 342 2016-06-30 373 2016-09-30 227 2016-12-31 251 2017-03-31 465 2017-06-30 301 2017-09-30 401 2017-12-31 974 2018-03-31 646 2018-06-30 807 2018-09-30 545 2018-12-31 1387 2019-03-31 612 2019-06-30 704 2019-09-30 572 2019-12-31 1242 2020-03-31 567 2020-06-30 504 2020-09-30 719 2020-12-31 399 2021-03-31 1326 2021-06-30 797 2021-09-30 665 2021-12-31 836 2022-03-31 712 2022-06-30 3694 2022-09-30 797 2022-12-31 537 2023-03-31 680 2023-06-30 482 2023-09-30 425