Quarter	US dollars
1999-09-30	-1285
1999-12-31	-1261
2000-03-31	-1063
2000-06-30	-1056
2000-09-30	-984
2000-12-31	-834
2001-03-31	-893
2001-06-30	-891
2001-09-30	-929
2001-12-31	-747
2002-03-31	-744
2002-06-30	-772
2002-09-30	-786
2002-12-31	-614
2003-03-31	-624
2003-06-30	-634
2003-09-30	-635
2003-12-31	-459
2004-03-31	-462
2004-06-30	-451
2004-09-30	-457
2004-12-31	-280
2005-03-31	-279
2005-06-30	-276
2005-09-30	-280
2005-12-31	-102
2006-03-31	-3
2006-06-30	-2
2006-09-30	-2
2006-12-31	0
2007-03-31	0
2007-06-30	0
2007-09-30	0
2007-12-31	0
2008-03-31	0
2008-06-30	0
2008-09-30	0
2008-12-31	0
2009-03-31	0
2009-06-30	0
2009-09-30	0
2009-12-31	0
2010-03-31	0
2010-06-30	0
2010-09-30	0
2010-12-31	0
2011-03-31	0
2011-06-30	0
2011-09-30	0
2011-12-31	0
2012-03-31	0
2012-06-30	0
2012-09-30	0
2012-12-31	0
2013-03-31	0
2013-06-30	0
2013-09-30	0
2013-12-31	0
2014-03-31	0
2014-06-30	0
2014-09-30	0
2014-12-31	0
2015-03-31	0
2015-06-30	0
2015-09-30	0
2015-12-31	0
2016-03-31	0
2016-06-30	0
2016-09-30	0
2016-12-31	0
2017-03-31	0
2017-06-30	0
2017-09-30	0
2017-12-31	0
2018-03-31	0
2018-06-30	0
2018-09-30	0
2018-12-31	0
2019-03-31	0
2019-06-30	0
2019-09-30	0
2019-12-31	0
2020-03-31	0
2020-06-30	0
2020-09-30	0
2020-12-31	0
2021-03-31	0
2021-06-30	0
2021-09-30	0
2021-12-31	0
2022-03-31	0
2022-06-30	0
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0
2023-12-31	0