Quarter US dollars 2004-12-31 81 2005-03-31 70 2005-06-30 16 2005-09-30 134 2005-12-31 144 2006-03-31 158 2006-06-30 205 2006-09-30 155 2006-12-31 114 2007-03-31 118 2007-06-30 120 2007-09-30 161 2007-12-31 131 2008-03-31 129 2008-06-30 127 2008-09-30 116 2008-12-31 105 2009-03-31 130 2009-06-30 128 2009-09-30 104 2009-12-31 105 2010-03-31 124 2010-06-30 24 2010-09-30 20 2010-12-31 17 2011-03-31 40 2011-06-30 40 2011-09-30 31 2011-12-31 62 2012-03-31 30 2012-06-30 30 2012-09-30 -26 2012-12-31 -24 2013-03-31 88 2013-06-30 82 2013-09-30 78 2013-12-31 41 2014-03-31 88 2014-06-30 77 2014-09-30 104 2014-12-31 148 2015-03-31 89 2015-06-30 69 2015-09-30 9 2015-12-31 -3 2016-03-31 6 2016-06-30 3 2016-09-30 1 2016-12-31 -1 2017-03-31 11 2017-06-30 29 2017-09-30 46 2017-12-31 9 2018-03-31 10 2018-06-30 0 2018-09-30 0 2018-12-31 -8 2019-03-31 7 2019-06-30 -13 2019-09-30 -4 2019-12-31 9 2020-03-31 2 2020-06-30 5 2020-09-30 8 2020-12-31 4 2021-03-31 4 2021-06-30 0 2021-09-30 5 2021-12-31 7 2022-03-31 0 2022-06-30 2 2022-09-30 2 2022-12-31 0 2023-03-31 12 2023-06-30 2 2023-09-30 10