Quarter US dollars 2004-12-31 -417 2005-03-31 -329 2005-06-30 -425 2005-09-30 -405 2005-12-31 -352 2006-03-31 -349 2006-06-30 -625 2006-09-30 -618 2006-12-31 -587 2007-03-31 -514 2007-06-30 -401 2007-09-30 -112 2007-12-31 -98 2008-03-31 -97 2008-06-30 -80 2008-09-30 -78 2008-12-31 -70 2009-03-31 -57 2009-06-30 -23 2009-09-30 26 2009-12-31 -16 2010-03-31 -15 2010-06-30 -4 2010-09-30 279 2010-12-31 6 2011-03-31 6 2011-06-30 5 2011-09-30 2 2011-12-31 25 2012-03-31 34 2012-06-30 -2 2012-09-30 -5 2012-12-31 39 2013-03-31 -5 2013-06-30 -14 2013-09-30 -18 2013-12-31 -13 2014-03-31 -25 2014-06-30 -14 2014-09-30 -10 2014-12-31 -8 2015-03-31 -7 2015-06-30 0 2015-09-30 2 2015-12-31 0 2016-03-31 -1 2016-06-30 -3 2016-09-30 -1 2016-12-31 -1 2017-03-31 -1 2017-06-30 -26 2017-09-30 -27 2017-12-31 -9 2018-03-31 -3 2018-06-30 -32 2018-09-30 -30 2018-12-31 -31 2019-03-31 -63 2019-06-30 -361 2019-09-30 -347 2019-12-31 -314 2020-03-31 -259 2020-06-30 -240 2020-09-30 -199 2020-12-31 -182 2021-03-31 -160 2021-06-30 -99 2021-09-30 -80 2021-12-31 -108 2022-03-31 -155 2022-06-30 -115 2022-09-30 -71 2022-12-31 -54 2023-03-31 -96 2023-06-30 -80 2023-09-30 -53