Quarter	US dollars
2004-12-31	-167
2005-03-31	-172
2005-06-30	-260
2005-09-30	-324
2005-12-31	-259
2006-03-31	-156
2006-06-30	-190
2006-09-30	-144
2006-12-31	-331
2007-03-31	-375
2007-06-30	-437
2007-09-30	-285
2007-12-31	-474
2008-03-31	-505
2008-06-30	-575
2008-09-30	-650
2008-12-31	-579
2009-03-31	-566
2009-06-30	-410
2009-09-30	-541
2009-12-31	-615
2010-03-31	-833
2010-06-30	-741
2010-09-30	-1145
2010-12-31	-1105
2011-03-31	-1238
2011-06-30	-1663
2011-09-30	-1038
2011-12-31	-878
2012-03-31	-1021
2012-06-30	-973
2012-09-30	-1037
2012-12-31	-804
2013-03-31	-856
2013-06-30	-1083
2013-09-30	-1265
2013-12-31	-1066
2014-03-31	-982
2014-06-30	-1361
2014-09-30	-1242
2014-12-31	-1075
2015-03-31	-974
2015-06-30	-1501
2015-09-30	-1248
2015-12-31	-1091
2016-03-31	-1081
2016-06-30	-1668
2016-09-30	-1667
2016-12-31	-1765
2017-03-31	-1653
2017-06-30	-1667
2017-09-30	-1992
2017-12-31	-1856
2018-03-31	-2220
2018-06-30	-1874
2018-09-30	-2246
2018-12-31	-2702
2019-03-31	-3135
2019-06-30	-3027
2019-09-30	-2035
2019-12-31	-1841
2020-03-31	-1761
2020-06-30	-1753
2020-09-30	-1736
2020-12-31	-2586
2021-03-31	-3488
2021-06-30	-3716
2021-09-30	-3368
2021-12-31	-4055
2022-03-31	-3864
2022-06-30	-3971
2022-09-30	-4158
2022-12-31	-4011
2023-03-31	-3815
2023-06-30	-2697
2023-09-30	-1548