Quarter US dollars 2004-12-31 96 2005-03-31 70 2005-06-30 66 2005-09-30 25 2005-12-31 34 2006-03-31 33 2006-06-30 33 2006-09-30 47 2006-12-31 33 2007-03-31 6 2007-06-30 -357 2007-09-30 -306 2007-12-31 -412 2008-03-31 -630 2008-06-30 -784 2008-09-30 -649 2008-12-31 -1522 2009-03-31 110 2009-06-30 160 2009-09-30 163 2009-12-31 136 2010-03-31 165 2010-06-30 -10 2010-09-30 189 2010-12-31 277 2011-03-31 -8 2011-06-30 0 2011-09-30 -83 2011-12-31 -119 2012-03-31 -105 2012-06-30 -184 2012-09-30 -224 2012-12-31 -202 2013-03-31 -301 2013-06-30 -82 2013-09-30 -123 2013-12-31 -94 2014-03-31 -267 2014-06-30 -268 2014-09-30 -287 2014-12-31 -268 2015-03-31 -217 2015-06-30 -162 2015-09-30 -206 2015-12-31 -182 2016-03-31 -180 2016-06-30 -107 2016-09-30 -82 2016-12-31 -134 2017-03-31 -38 2017-06-30 -8 2017-09-30 0 2017-12-31 -27 2018-03-31 -38 2018-06-30 -74 2018-09-30 -46 2018-12-31 -86 2019-03-31 -94 2019-06-30 -95 2019-09-30 -107 2019-12-31 -48 2020-03-31 -45 2020-06-30 -26 2020-09-30 -169 2020-12-31 -175 2021-03-31 -127 2021-06-30 -106 2021-09-30 -202 2021-12-31 -443 2022-03-31 -649 2022-06-30 -703 2022-09-30 -751 2022-12-31 -588 2023-03-31 23 2023-06-30 -411 2023-09-30 -412