Quarterly US dollars
1999-09-30 0
1999-12-31 0
2000-03-31 994
2000-06-30 1023
2000-09-30 991
2000-12-31 1006
2001-03-31 793
2001-06-30 838
2001-09-30 853
2001-12-31 745
2002-03-31 812
2002-06-30 588
2002-09-30 566
2002-12-31 959
2003-03-31 588
2003-06-30 535
2003-09-30 745
2003-12-31 566
2004-03-31 497
2004-06-30 502
2004-09-30 258
2004-12-31 216
2005-03-31 210
2005-06-30 201
2005-09-30 218
2005-12-31 154
2006-03-31 175
2006-06-30 145
2006-09-30 141
2006-12-31 150
2007-03-31 156
2007-06-30 132
2007-09-30 151
2007-12-31 170
2008-03-31 190
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