Quarter US dollars 2004-12-31 303 2005-03-31 340 2005-06-30 335 2005-09-30 357 2005-12-31 340 2006-03-31 531 2006-06-30 1006 2006-09-30 1046 2006-12-31 1166 2007-03-31 1279 2007-06-30 1178 2007-09-30 1785 2007-12-31 1256 2008-03-31 1218 2008-06-30 1668 2008-09-30 1067 2008-12-31 1150 2009-03-31 1010 2009-06-30 1138 2009-09-30 923 2009-12-31 1043 2010-03-31 1335 2010-06-30 1290 2010-09-30 1213 2010-12-31 1135 2011-03-31 2106 2011-06-30 2869 2011-09-30 2226 2011-12-31 2084 2012-03-31 1851 2012-06-30 1325 2012-09-30 2382 2012-12-31 2301 2013-03-31 1970 2013-06-30 2254 2013-09-30 1968 2013-12-31 1673 2014-03-31 1986 2014-06-30 1691 2014-09-30 1600 2014-12-31 926 2015-03-31 1330 2015-06-30 870 2015-09-30 1421 2015-12-31 1230 2016-03-31 1448 2016-06-30 865 2016-09-30 1328 2016-12-31 1911 2017-03-31 1937 2017-06-30 1554 2017-09-30 1818 2017-12-31 2337 2018-03-31 1981 2018-06-30 3178 2018-09-30 2600 2018-12-31 2621 2019-03-31 1574 2019-06-30 1613 2019-09-30 2331 2019-12-31 1828 2020-03-31 2137 2020-06-30 3040 2020-09-30 2051 2020-12-31 1768 2021-03-31 3297 2021-06-30 4921 2021-09-30 4885 2021-12-31 4516 2022-03-31 5362 2022-06-30 5043 2022-09-30 3928 2022-12-31 6253 2023-03-31 5012 2023-06-30 6124 2023-09-30 6734