Quarter	US dollars
2004-12-31	1385659
2005-03-31	1451016
2005-06-30	1500803
2005-09-30	1621985
2005-12-31	1597114
2006-03-31	1809245
2006-06-30	1843690
2006-09-30	1969408
2006-12-31	2043920
2007-03-31	2211903
2007-06-30	2315364
2007-09-30	2556232
2007-12-31	2593524
2008-03-31	2821668
2008-06-30	2748316
2008-09-30	2876382
2008-12-31	2411665
2009-03-31	2392024
2009-06-30	2392196
2009-09-30	2372803
2009-12-31	2191873
2010-03-31	2244548
2010-06-30	2232244
2010-09-30	2294467
2010-12-31	2272787
2011-03-31	2304280
2011-06-30	2388609
2011-09-30	2296594
2011-12-31	2196988
2012-03-31	2268867
2012-06-30	2218750
2012-09-30	2258189
2012-12-31	2279586
2013-03-31	2206754
2013-06-30	2192437
2013-09-30	2225674
2013-12-31	2210561
2014-03-31	2177679
2014-06-30	2206238
2014-09-30	2120556
2014-12-31	2071253
2015-03-31	2014998
2015-06-30	1949836
2015-09-30	1746719
2015-12-31	1694991
2016-03-31	1702618
2016-06-30	1729603
2016-09-30	1705730
2016-12-31	1684903
2017-03-31	1818354
2017-06-30	1844257
2017-09-30	1854464
2017-12-31	1946660
2018-03-31	1954780
2018-06-30	1878469
2018-09-30	1860314
2018-12-31	1859534
2019-03-31	1933601
2019-06-30	2005786
2019-09-30	2032156
2019-12-31	2028051
2020-03-31	2136806
2020-06-30	2064174
2020-09-30	2097398
2020-12-31	2121677
2021-03-31	2106495
2021-06-30	2201642
2021-09-30	2211770
2021-12-31	2269961
2022-03-31	2259310
2022-06-30	2194088
2022-09-30	2177430
2022-12-31	2157103
2023-03-31	2222209
2023-06-30	2294014
2023-09-30	2281564