Quarter	US dollars
2004-12-31	637
2005-03-31	894
2005-06-30	832
2005-09-30	884
2005-12-31	917
2006-03-31	1046
2006-06-30	1111
2006-09-30	1177
2006-12-31	1247
2007-03-31	1279
2007-06-30	1543
2007-09-30	1665
2007-12-31	1533
2008-03-31	1632
2008-06-30	1321
2008-09-30	1333
2008-12-31	1373
2009-03-31	1225
2009-06-30	1232
2009-09-30	1374
2009-12-31	1618
2010-03-31	1794
2010-06-30	1646
2010-09-30	1679
2010-12-31	2065
2011-03-31	1936
2011-06-30	2057
2011-09-30	2035
2011-12-31	1917
2012-03-31	1844
2012-06-30	1791
2012-09-30	2020
2012-12-31	2008
2013-03-31	2235
2013-06-30	2107
2013-09-30	2241
2013-12-31	2035
2014-03-31	1941
2014-06-30	1696
2014-09-30	1707
2014-12-31	1587
2015-03-31	1500
2015-06-30	1263
2015-09-30	1875
2015-12-31	1780
2016-03-31	1756
2016-06-30	1876
2016-09-30	2098
2016-12-31	2187
2017-03-31	2361
2017-06-30	1491
2017-09-30	1489
2017-12-31	1439
2018-03-31	1465
2018-06-30	1534
2018-09-30	1626
2018-12-31	1545
2019-03-31	1479
2019-06-30	1535
2019-09-30	1722
2019-12-31	1493
2020-03-31	1683
2020-06-30	1518
2020-09-30	1577
2020-12-31	1530
2021-03-31	1756
2021-06-30	1707
2021-09-30	1646
2021-12-31	1686
2022-03-31	1637
2022-06-30	1407
2022-09-30	1208
2022-12-31	974
2023-03-31	1177
2023-06-30	1049
2023-09-30	1081