Quarter US dollars 2004-12-31 92 2005-03-31 106 2005-06-30 134 2005-09-30 108 2005-12-31 38 2006-03-31 50 2006-06-30 76 2006-09-30 75 2006-12-31 104 2007-03-31 112 2007-06-30 112 2007-09-30 128 2007-12-31 149 2008-03-31 153 2008-06-30 181 2008-09-30 80 2008-12-31 72 2009-03-31 27 2009-06-30 33 2009-09-30 54 2009-12-31 73 2010-03-31 38 2010-06-30 114 2010-09-30 293 2010-12-31 1185 2011-03-31 1209 2011-06-30 1134 2011-09-30 2275 2011-12-31 2028 2012-03-31 2837 2012-06-30 2987 2012-09-30 2770 2012-12-31 3344 2013-03-31 4872 2013-06-30 5647 2013-09-30 5274 2013-12-31 4481 2014-03-31 4372 2014-06-30 5801 2014-09-30 4166 2014-12-31 3229 2015-03-31 2736 2015-06-30 2976 2015-09-30 2737 2015-12-31 2827 2016-03-31 3268 2016-06-30 3001 2016-09-30 2965 2016-12-31 2585 2017-03-31 2403 2017-06-30 1758 2017-09-30 1429 2017-12-31 1644 2018-03-31 1062 2018-06-30 914 2018-09-30 953 2018-12-31 991 2019-03-31 997 2019-06-30 1240 2019-09-30 1198 2019-12-31 1003 2020-03-31 970 2020-06-30 953 2020-09-30 919 2020-12-31 946 2021-03-31 901 2021-06-30 905 2021-09-30 917 2021-12-31 1097 2022-03-31 1265 2022-06-30 1398 2022-09-30 1298 2022-12-31 1249 2023-03-31 1052 2023-06-30 1011 2023-09-30 1280