Quarter US dollars 2004-12-31 209 2005-03-31 176 2005-06-30 138 2005-09-30 110 2005-12-31 36 2006-03-31 154 2006-06-30 178 2006-09-30 273 2006-12-31 301 2007-03-31 312 2007-06-30 297 2007-09-30 346 2007-12-31 330 2008-03-31 193 2008-06-30 243 2008-09-30 207 2008-12-31 198 2009-03-31 202 2009-06-30 180 2009-09-30 210 2009-12-31 254 2010-03-31 158 2010-06-30 347 2010-09-30 405 2010-12-31 1213 2011-03-31 1323 2011-06-30 1264 2011-09-30 2396 2011-12-31 2027 2012-03-31 2833 2012-06-30 2987 2012-09-30 2934 2012-12-31 3507 2013-03-31 5036 2013-06-30 5812 2013-09-30 5487 2013-12-31 4841 2014-03-31 4708 2014-06-30 6015 2014-09-30 4359 2014-12-31 3339 2015-03-31 2842 2015-06-30 2977 2015-09-30 2739 2015-12-31 2830 2016-03-31 3282 2016-06-30 3013 2016-09-30 2978 2016-12-31 2584 2017-03-31 2401 2017-06-30 1759 2017-09-30 1429 2017-12-31 1644 2018-03-31 1069 2018-06-30 922 2018-09-30 965 2018-12-31 990 2019-03-31 1006 2019-06-30 1249 2019-09-30 1207 2019-12-31 1012 2020-03-31 979 2020-06-30 960 2020-09-30 925 2020-12-31 949 2021-03-31 904 2021-06-30 908 2021-09-30 920 2021-12-31 1098 2022-03-31 1266 2022-06-30 1388 2022-09-30 1294 2022-12-31 1246 2023-03-31 1048 2023-06-30 1011 2023-09-30 1280