Quarter US dollars 2004-12-31 25 2005-03-31 28 2005-06-30 27 2005-09-30 30 2005-12-31 26 2006-03-31 28 2006-06-30 30 2006-09-30 28 2006-12-31 906 2007-03-31 994 2007-06-30 995 2007-09-30 1047 2007-12-31 1131 2008-03-31 1169 2008-06-30 1194 2008-09-30 1198 2008-12-31 1152 2009-03-31 1056 2009-06-30 995 2009-09-30 974 2009-12-31 948 2010-03-31 937 2010-06-30 938 2010-09-30 893 2010-12-31 950 2011-03-31 933 2011-06-30 942 2011-09-30 896 2011-12-31 870 2012-03-31 917 2012-06-30 902 2012-09-30 887 2012-12-31 209 2013-03-31 205 2013-06-30 205 2013-09-30 196 2013-12-31 104 2014-03-31 103 2014-06-30 106 2014-09-30 92 2014-12-31 92 2015-03-31 92 2015-06-30 98 2015-09-30 98 2015-12-31 96 2016-03-31 95 2016-06-30 13 2016-09-30 5 2016-12-31 4 2017-03-31 5 2017-06-30 9 2017-09-30 25 2017-12-31 11 2018-03-31 13 2018-06-30 12 2018-09-30 4 2018-12-31 0 2019-03-31 0 2019-06-30 6 2019-09-30 5 2019-12-31 5 2020-03-31 6 2020-06-30 6 2020-09-30 0 2020-12-31 1 2021-03-31 4 2021-06-30 7 2021-09-30 1 2021-12-31 13 2022-03-31 22 2022-06-30 8 2022-09-30 7 2022-12-31 6 2023-03-31 1 2023-06-30 2 2023-09-30 3