Quarter	US dollars
2004-12-31	1388
2005-03-31	1917
2005-06-30	1163
2005-09-30	1136
2005-12-31	1130
2006-03-31	1145
2006-06-30	1091
2006-09-30	1343
2006-12-31	1652
2007-03-31	1828
2007-06-30	1916
2007-09-30	2557
2007-12-31	2626
2008-03-31	3417
2008-06-30	2898
2008-09-30	3053
2008-12-31	1918
2009-03-31	1960
2009-06-30	1871
2009-09-30	2028
2009-12-31	3144
2010-03-31	3014
2010-06-30	2517
2010-09-30	2018
2010-12-31	2268
2011-03-31	2186
2011-06-30	2074
2011-09-30	2382
2011-12-31	2477
2012-03-31	2747
2012-06-30	2748
2012-09-30	2794
2012-12-31	2134
2013-03-31	2339
2013-06-30	1969
2013-09-30	1961
2013-12-31	2172
2014-03-31	2459
2014-06-30	2445
2014-09-30	2498
2014-12-31	2717
2015-03-31	2212
2015-06-30	1976
2015-09-30	1745
2015-12-31	1720
2016-03-31	2546
2016-06-30	2647
2016-09-30	2446
2016-12-31	2379
2017-03-31	2330
2017-06-30	2612
2017-09-30	2647
2017-12-31	2674
2018-03-31	2634
2018-06-30	2457
2018-09-30	2366
2018-12-31	2222
2019-03-31	2639
2019-06-30	2439
2019-09-30	2274
2019-12-31	2324
2020-03-31	2259
2020-06-30	2268
2020-09-30	1824
2020-12-31	1799
2021-03-31	1520
2021-06-30	2809
2021-09-30	1827
2021-12-31	2822
2022-03-31	2205
2022-06-30	2613
2022-09-30	2792
2022-12-31	2251
2023-03-31	1888
2023-06-30	1973
2023-09-30	1886