Quarter US dollars 2004-12-31 81 2005-03-31 57 2005-06-30 50 2005-09-30 83 2005-12-31 139 2006-03-31 139 2006-06-30 122 2006-09-30 189 2006-12-31 313 2007-03-31 367 2007-06-30 467 2007-09-30 1379 2007-12-31 438 2008-03-31 775 2008-06-30 1105 2008-09-30 1112 2008-12-31 1120 2009-03-31 1301 2009-06-30 850 2009-09-30 883 2009-12-31 1132 2010-03-31 1021 2010-06-30 935 2010-09-30 971 2010-12-31 653 2011-03-31 519 2011-06-30 820 2011-09-30 941 2011-12-31 1427 2012-03-31 1191 2012-06-30 1222 2012-09-30 1453 2012-12-31 1198 2013-03-31 1892 2013-06-30 1488 2013-09-30 1323 2013-12-31 1271 2014-03-31 1182 2014-06-30 1508 2014-09-30 1444 2014-12-31 1230 2015-03-31 1189 2015-06-30 1063 2015-09-30 812 2015-12-31 247 2016-03-31 318 2016-06-30 443 2016-09-30 598 2016-12-31 950 2017-03-31 898 2017-06-30 360 2017-09-30 424 2017-12-31 97 2018-03-31 212 2018-06-30 169 2018-09-30 179 2018-12-31 132 2019-03-31 121 2019-06-30 120 2019-09-30 124 2019-12-31 180 2020-03-31 148 2020-06-30 127 2020-09-30 115 2020-12-31 120 2021-03-31 186 2021-06-30 272 2021-09-30 264 2021-12-31 337 2022-03-31 149 2022-06-30 44 2022-09-30 15 2022-12-31 8 2023-03-31 8 2023-06-30 8 2023-09-30 2