Quarter	US dollars
2004-12-31	920
2005-03-31	1174
2005-06-30	1201
2005-09-30	991
2005-12-31	1341
2006-03-31	1343
2006-06-30	1315
2006-09-30	1164
2006-12-31	1389
2007-03-31	959
2007-06-30	973
2007-09-30	1216
2007-12-31	1418
2008-03-31	1355
2008-06-30	1208
2008-09-30	1353
2008-12-31	1074
2009-03-31	987
2009-06-30	967
2009-09-30	1155
2009-12-31	1054
2010-03-31	1227
2010-06-30	1315
2010-09-30	1657
2010-12-31	2452
2011-03-31	1775
2011-06-30	1842
2011-09-30	2320
2011-12-31	2710
2012-03-31	2443
2012-06-30	2395
2012-09-30	3159
2012-12-31	3295
2013-03-31	2515
2013-06-30	2386
2013-09-30	2623
2013-12-31	3178
2014-03-31	2963
2014-06-30	2881
2014-09-30	2709
2014-12-31	2892
2015-03-31	2463
2015-06-30	2510
2015-09-30	2387
2015-12-31	2521
2016-03-31	2201
2016-06-30	2059
2016-09-30	2046
2016-12-31	2229
2017-03-31	1777
2017-06-30	2055
2017-09-30	2310
2017-12-31	2385
2018-03-31	1733
2018-06-30	1508
2018-09-30	1260
2018-12-31	1451
2019-03-31	2039
2019-06-30	1816
2019-09-30	1774
2019-12-31	2032
2020-03-31	1925
2020-06-30	2063
2020-09-30	2259
2020-12-31	2516
2021-03-31	2657
2021-06-30	2721
2021-09-30	1955
2021-12-31	2024
2022-03-31	1785
2022-06-30	1285
2022-09-30	1306
2022-12-31	1245
2023-03-31	1888
2023-06-30	1497
2023-09-30	1877