Quarter	US dollars
1999-09-30	1256
1999-12-31	1251
2000-03-31	1168
2000-06-30	1139
2000-09-30	1098
2000-12-31	1078
2001-03-31	1113
2001-06-30	1144
2001-09-30	1132
2001-12-31	1192
2002-03-31	1114
2002-06-30	1153
2002-09-30	1082
2002-12-31	1078
2003-03-31	1048
2003-06-30	1073
2003-09-30	1072
2003-12-31	1132
2004-03-31	1119
2004-06-30	1134
2004-09-30	1149
2004-12-31	1200
2005-03-31	1229
2005-06-30	1169
2005-09-30	955
2005-12-31	1188
2006-03-31	1207
2006-06-30	1350
2006-09-30	1304
2006-12-31	1319
2007-03-31	1294
2007-06-30	1336
2007-09-30	1408
2007-12-31	1412
2008-03-31	1511
2008-06-30	1556
2008-09-30	1609
2008-12-31	1727
2009-03-31	1552
2009-06-30	1764
2009-09-30	1759
2009-12-31	1759
2010-03-31	1729
2010-06-30	1746
2010-09-30	1880
2010-12-31	1932
2011-03-31	2002
2011-06-30	2108
2011-09-30	2072
2011-12-31	2308
2012-03-31	2378
2012-06-30	2367
2012-09-30	2414
2012-12-31	2522
2013-03-31	2813
2013-06-30	2756
2013-09-30	2826
2013-12-31	2755
2014-03-31	2706
2014-06-30	2768
2014-09-30	2631
2014-12-31	2583
2015-03-31	2527
2015-06-30	2466
2015-09-30	2760
2015-12-31	2135
2016-03-31	2137
2016-06-30	1954
2016-09-30	1916
2016-12-31	1437
2017-03-31	1289
2017-06-30	1092
2017-09-30	712
2017-12-31	492
2018-03-31	690
2018-06-30	1039
2018-09-30	913
2018-12-31	1024
2019-03-31	955
2019-06-30	961
2019-09-30	956
2019-12-31	1382
2020-03-31	1046
2020-06-30	756
2020-09-30	929
2020-12-31	1186
2021-03-31	886
2021-06-30	811
2021-09-30	841
2021-12-31	1026
2022-03-31	854
2022-06-30	790
2022-09-30	798
2022-12-31	861
2023-03-31	764
2023-06-30	805
2023-09-30	752