Quarter US dollars 2004-12-31 83 2005-03-31 257 2005-06-30 129 2005-09-30 124 2005-12-31 96 2006-03-31 95 2006-06-30 96 2006-09-30 262 2006-12-31 1816 2007-03-31 1724 2007-06-30 277 2007-09-30 381 2007-12-31 135 2008-03-31 380 2008-06-30 396 2008-09-30 296 2008-12-31 283 2009-03-31 274 2009-06-30 323 2009-09-30 325 2009-12-31 291 2010-03-31 346 2010-06-30 934 2010-09-30 811 2010-12-31 581 2011-03-31 670 2011-06-30 600 2011-09-30 494 2011-12-31 609 2012-03-31 2228 2012-06-30 1796 2012-09-30 2406 2012-12-31 2243 2013-03-31 2101 2013-06-30 2013 2013-09-30 1670 2013-12-31 1706 2014-03-31 1967 2014-06-30 2096 2014-09-30 2579 2014-12-31 2658 2015-03-31 3067 2015-06-30 2480 2015-09-30 2405 2015-12-31 2672 2016-03-31 2080 2016-06-30 1575 2016-09-30 1308 2016-12-31 1471 2017-03-31 1442 2017-06-30 1269 2017-09-30 1057 2017-12-31 1213 2018-03-31 951 2018-06-30 887 2018-09-30 713 2018-12-31 997 2019-03-31 1407 2019-06-30 1054 2019-09-30 685 2019-12-31 594 2020-03-31 820 2020-06-30 1409 2020-09-30 1953 2020-12-31 1149 2021-03-31 941 2021-06-30 1012 2021-09-30 975 2021-12-31 961 2022-03-31 932 2022-06-30 848 2022-09-30 9 2022-12-31 10 2023-03-31 680 2023-06-30 535 2023-09-30 381