Quarter	US dollars
2004-12-31	827
2005-03-31	1045
2005-06-30	880
2005-09-30	943
2005-12-31	1123
2006-03-31	1212
2006-06-30	1161
2006-09-30	1235
2006-12-31	1354
2007-03-31	1387
2007-06-30	1685
2007-09-30	1809
2007-12-31	1842
2008-03-31	2073
2008-06-30	1825
2008-09-30	1827
2008-12-31	1852
2009-03-31	1796
2009-06-30	1826
2009-09-30	1894
2009-12-31	2288
2010-03-31	2639
2010-06-30	2373
2010-09-30	2489
2010-12-31	2902
2011-03-31	2550
2011-06-30	2648
2011-09-30	2781
2011-12-31	3177
2012-03-31	2720
2012-06-30	2814
2012-09-30	3288
2012-12-31	3560
2013-03-31	3865
2013-06-30	3845
2013-09-30	3608
2013-12-31	3562
2014-03-31	3478
2014-06-30	3255
2014-09-30	3178
2014-12-31	2786
2015-03-31	2684
2015-06-30	2359
2015-09-30	2849
2015-12-31	2873
2016-03-31	2483
2016-06-30	2702
2016-09-30	2796
2016-12-31	3126
2017-03-31	3276
2017-06-30	2307
2017-09-30	1980
2017-12-31	1868
2018-03-31	2158
2018-06-30	1987
2018-09-30	2136
2018-12-31	2355
2019-03-31	2804
2019-06-30	2339
2019-09-30	2463
2019-12-31	2349
2020-03-31	2292
2020-06-30	2301
2020-09-30	2461
2020-12-31	2307
2021-03-31	2436
2021-06-30	3058
2021-09-30	2872
2021-12-31	2732
2022-03-31	2384
2022-06-30	2075
2022-09-30	2008
2022-12-31	1660
2023-03-31	1600
2023-06-30	1082
2023-09-30	917