Quarter US dollars 2004-12-31 509 2005-03-31 2764 2005-06-30 837 2005-09-30 952 2005-12-31 735 2006-03-31 435 2006-06-30 462 2006-09-30 512 2006-12-31 354 2007-03-31 698 2007-06-30 813 2007-09-30 2384 2007-12-31 3327 2008-03-31 4694 2008-06-30 2225 2008-09-30 2490 2008-12-31 2066 2009-03-31 1700 2009-06-30 3745 2009-09-30 1932 2009-12-31 3139 2010-03-31 3910 2010-06-30 3289 2010-09-30 2278 2010-12-31 2497 2011-03-31 3297 2011-06-30 2436 2011-09-30 2351 2011-12-31 2644 2012-03-31 2632 2012-06-30 1729 2012-09-30 1928 2012-12-31 2333 2013-03-31 1898 2013-06-30 1313 2013-09-30 871 2013-12-31 1322 2014-03-31 1947 2014-06-30 1004 2014-09-30 627 2014-12-31 1025 2015-03-31 1102 2015-06-30 173 2015-09-30 326 2015-12-31 316 2016-03-31 410 2016-06-30 418 2016-09-30 125 2016-12-31 240 2017-03-31 1478 2017-06-30 523 2017-09-30 462 2017-12-31 435 2018-03-31 1683 2018-06-30 1645 2018-09-30 365 2018-12-31 368 2019-03-31 1230 2019-06-30 941 2019-09-30 324 2019-12-31 811 2020-03-31 995 2020-06-30 1486 2020-09-30 1745 2020-12-31 332 2021-03-31 742 2021-06-30 831 2021-09-30 1226 2021-12-31 272 2022-03-31 307 2022-06-30 711 2022-09-30 345 2022-12-31 1137 2023-03-31 4288 2023-06-30 4362 2023-09-30 1126