Quarter	US dollars
2004-12-31	-92
2005-03-31	-280
2005-06-30	-203
2005-09-30	-76
2005-12-31	-372
2006-03-31	-461
2006-06-30	-658
2006-09-30	-777
2006-12-31	-1127
2007-03-31	-936
2007-06-30	-1820
2007-09-30	-2101
2007-12-31	-2202
2008-03-31	-2516
2008-06-30	-2271
2008-09-30	-2755
2008-12-31	-2126
2009-03-31	-2160
2009-06-30	-1942
2009-09-30	-1708
2009-12-31	-1746
2010-03-31	-1653
2010-06-30	-1984
2010-09-30	-2226
2010-12-31	-2262
2011-03-31	-2018
2011-06-30	-2015
2011-09-30	-1938
2011-12-31	-2274
2012-03-31	-2276
2012-06-30	-2281
2012-09-30	-1707
2012-12-31	-1525
2013-03-31	-1224
2013-06-30	-1224
2013-09-30	-1495
2013-12-31	-1628
2014-03-31	-1621
2014-06-30	-1937
2014-09-30	-2561
2014-12-31	-2719
2015-03-31	-2751
2015-06-30	-2749
2015-09-30	-2846
2015-12-31	-2432
2016-03-31	-2185
2016-06-30	-2280
2016-09-30	-2285
2016-12-31	-2402
2017-03-31	-1568
2017-06-30	-1806
2017-09-30	-2396
2017-12-31	-2316
2018-03-31	-2262
2018-06-30	-2812
2018-09-30	-2694
2018-12-31	-2771
2019-03-31	-2878
2019-06-30	-2616
2019-09-30	-2453
2019-12-31	-2581
2020-03-31	-2767
2020-06-30	-2653
2020-09-30	-2578
2020-12-31	-1334
2021-03-31	-1342
2021-06-30	-1426
2021-09-30	-1499
2021-12-31	-1569
2022-03-31	-1204
2022-06-30	-1118
2022-09-30	-1210
2022-12-31	-977
2023-03-31	-955
2023-06-30	-856
2023-09-30	-784