Quarter US dollars 2004-12-31 547 2005-03-31 253 2005-06-30 109 2005-09-30 166 2005-12-31 185 2006-03-31 173 2006-06-30 76 2006-09-30 39 2006-12-31 67 2007-03-31 100 2007-06-30 36 2007-09-30 31 2007-12-31 585 2008-03-31 519 2008-06-30 54 2008-09-30 16 2008-12-31 29 2009-03-31 54 2009-06-30 77 2009-09-30 51 2009-12-31 60 2010-03-31 39 2010-06-30 -13 2010-09-30 659 2010-12-31 390 2011-03-31 229 2011-06-30 310 2011-09-30 389 2011-12-31 209 2012-03-31 168 2012-06-30 163 2012-09-30 234 2012-12-31 139 2013-03-31 117 2013-06-30 35 2013-09-30 89 2013-12-31 74 2014-03-31 50 2014-06-30 321 2014-09-30 350 2014-12-31 34 2015-03-31 40 2015-06-30 20 2015-09-30 15 2015-12-31 141 2016-03-31 175 2016-06-30 4 2016-09-30 5 2016-12-31 5 2017-03-31 6 2017-06-30 937 2017-09-30 40 2017-12-31 34 2018-03-31 108 2018-06-30 73 2018-09-30 86 2018-12-31 951 2019-03-31 1788 2019-06-30 915 2019-09-30 827 2019-12-31 947 2020-03-31 134 2020-06-30 73 2020-09-30 909 2020-12-31 1036 2021-03-31 989 2021-06-30 904 2021-09-30 148 2021-12-31 256 2022-03-31 92 2022-06-30 37 2022-09-30 68 2022-12-31 88 2023-03-31 363 2023-06-30 392 2023-09-30 942