Quarter US dollars 2004-12-31 -21 2005-03-31 28 2005-06-30 -4 2005-09-30 41 2005-12-31 64 2006-03-31 45 2006-06-30 55 2006-09-30 50 2006-12-31 133 2007-03-31 161 2007-06-30 165 2007-09-30 77 2007-12-31 104 2008-03-31 250 2008-06-30 135 2008-09-30 68 2008-12-31 29 2009-03-31 44 2009-06-30 -15 2009-09-30 48 2009-12-31 15 2010-03-31 -114 2010-06-30 -100 2010-09-30 -202 2010-12-31 -164 2011-03-31 18 2011-06-30 -42 2011-09-30 -2 2011-12-31 -97 2012-03-31 -128 2012-06-30 -99 2012-09-30 -289 2012-12-31 -183 2013-03-31 -77 2013-06-30 -74 2013-09-30 -105 2013-12-31 -48 2014-03-31 -70 2014-06-30 -58 2014-09-30 -86 2014-12-31 -106 2015-03-31 -102 2015-06-30 -96 2015-09-30 -94 2015-12-31 -102 2016-03-31 -112 2016-06-30 -86 2016-09-30 -165 2016-12-31 -208 2017-03-31 -204 2017-06-30 -170 2017-09-30 -173 2017-12-31 -220 2018-03-31 -119 2018-06-30 -165 2018-09-30 -145 2018-12-31 -146 2019-03-31 -194 2019-06-30 -103 2019-09-30 -440 2019-12-31 -572 2020-03-31 -298 2020-06-30 -307 2020-09-30 -310 2020-12-31 -214 2021-03-31 -225 2021-06-30 -193 2021-09-30 -202 2021-12-31 -205 2022-03-31 -184 2022-06-30 -301 2022-09-30 -192 2022-12-31 -201 2023-03-31 -205 2023-06-30 -217 2023-09-30 -202