Quarter US dollars 2004-12-31 219 2005-03-31 119 2005-06-30 47 2005-09-30 101 2005-12-31 53 2006-03-31 49 2006-06-30 104 2006-09-30 58 2006-12-31 65 2007-03-31 63 2007-06-30 60 2007-09-30 114 2007-12-31 133 2008-03-31 141 2008-06-30 96 2008-09-30 125 2008-12-31 109 2009-03-31 2650 2009-06-30 2829 2009-09-30 2780 2009-12-31 2811 2010-03-31 3259 2010-06-30 3242 2010-09-30 4686 2010-12-31 4806 2011-03-31 2206 2011-06-30 2253 2011-09-30 1358 2011-12-31 1418 2012-03-31 1427 2012-06-30 2566 2012-09-30 2379 2012-12-31 2078 2013-03-31 2898 2013-06-30 3484 2013-09-30 3367 2013-12-31 3238 2014-03-31 704 2014-06-30 479 2014-09-30 97 2014-12-31 947 2015-03-31 616 2015-06-30 950 2015-09-30 1772 2015-12-31 1464 2016-03-31 1209 2016-06-30 1197 2016-09-30 2176 2016-12-31 3296 2017-03-31 2809 2017-06-30 6259 2017-09-30 7391 2017-12-31 7067 2018-03-31 7098 2018-06-30 11159 2018-09-30 11613 2018-12-31 12673 2019-03-31 8631 2019-06-30 8523 2019-09-30 7220 2019-12-31 7666 2020-03-31 8149 2020-06-30 7450 2020-09-30 8823 2020-12-31 10193 2021-03-31 10548 2021-06-30 13064 2021-09-30 15039 2021-12-31 10841 2022-03-31 10091 2022-06-30 12768 2022-09-30 5437 2022-12-31 11020 2023-03-31 12701 2023-06-30 13914 2023-09-30 14954