Quarter	US dollars
2004-12-31	1033
2005-03-31	1025
2005-06-30	1158
2005-09-30	1788
2005-12-31	2777
2006-03-31	2803
2006-06-30	2589
2006-09-30	2834
2006-12-31	2714
2007-03-31	2673
2007-06-30	3208
2007-09-30	3435
2007-12-31	2895
2008-03-31	3077
2008-06-30	2253
2008-09-30	2094
2008-12-31	1708
2009-03-31	2951
2009-06-30	3040
2009-09-30	1919
2009-12-31	1741
2010-03-31	1676
2010-06-30	1604
2010-09-30	1809
2010-12-31	1913
2011-03-31	11348
2011-06-30	9643
2011-09-30	1715
2011-12-31	1840
2012-03-31	2063
2012-06-30	1980
2012-09-30	2127
2012-12-31	2312
2013-03-31	2335
2013-06-30	2365
2013-09-30	2687
2013-12-31	2887
2014-03-31	2156
2014-06-30	2494
2014-09-30	2354
2014-12-31	2037
2015-03-31	1902
2015-06-30	2076
2015-09-30	2118
2015-12-31	2273
2016-03-31	2444
2016-06-30	2985
2016-09-30	2836
2016-12-31	2745
2017-03-31	3115
2017-06-30	3318
2017-09-30	3751
2017-12-31	4145
2018-03-31	4311
2018-06-30	3558
2018-09-30	3970
2018-12-31	4308
2019-03-31	4286
2019-06-30	4222
2019-09-30	4311
2019-12-31	4445
2020-03-31	3599
2020-06-30	3385
2020-09-30	3416
2020-12-31	2341
2021-03-31	1760
2021-06-30	2194
2021-09-30	2288
2021-12-31	1693
2022-03-31	2854
2022-06-30	2198
2022-09-30	2282
2022-12-31	2139
2023-03-31	1929
2023-06-30	2552
2023-09-30	1691