Quarter US dollars 2004-12-31 171 2005-03-31 106 2005-06-30 145 2005-09-30 338 2005-12-31 324 2006-03-31 923 2006-06-30 939 2006-09-30 760 2006-12-31 714 2007-03-31 145 2007-06-30 90 2007-09-30 1644 2007-12-31 1865 2008-03-31 1942 2008-06-30 1709 2008-09-30 1714 2008-12-31 411 2009-03-31 249 2009-06-30 273 2009-09-30 235 2009-12-31 221 2010-03-31 215 2010-06-30 172 2010-09-30 268 2010-12-31 271 2011-03-31 346 2011-06-30 299 2011-09-30 259 2011-12-31 223 2012-03-31 221 2012-06-30 202 2012-09-30 257 2012-12-31 260 2013-03-31 260 2013-06-30 273 2013-09-30 214 2013-12-31 192 2014-03-31 148 2014-06-30 215 2014-09-30 263 2014-12-31 115 2015-03-31 125 2015-06-30 94 2015-09-30 98 2015-12-31 73 2016-03-31 50 2016-06-30 54 2016-09-30 10 2016-12-31 6 2017-03-31 24 2017-06-30 21 2017-09-30 20 2017-12-31 38 2018-03-31 20 2018-06-30 24 2018-09-30 76 2018-12-31 46 2019-03-31 23 2019-06-30 46 2019-09-30 51 2019-12-31 42 2020-03-31 42 2020-06-30 53 2020-09-30 50 2020-12-31 48 2021-03-31 40 2021-06-30 53 2021-09-30 51 2021-12-31 46 2022-03-31 43 2022-06-30 72 2022-09-30 283 2022-12-31 292 2023-03-31 153 2023-06-30 259 2023-09-30 335