Quarter	US dollars
1999-09-30	627
1999-12-31	609
2000-03-31	729
2000-06-30	849
2000-09-30	999
2000-12-31	990
2001-03-31	1015
2001-06-30	999
2001-09-30	742
2001-12-31	769
2002-03-31	788
2002-06-30	795
2002-09-30	947
2002-12-31	840
2003-03-31	827
2003-06-30	843
2003-09-30	852
2003-12-31	868
2004-03-31	849
2004-06-30	869
2004-09-30	887
2004-12-31	952
2005-03-31	930
2005-06-30	830
2005-09-30	934
2005-12-31	936
2006-03-31	990
2006-06-30	1063
2006-09-30	999
2006-12-31	930
2007-03-31	1010
2007-06-30	1144
2007-09-30	1768
2007-12-31	1216
2008-03-31	1330
2008-06-30	1357
2008-09-30	1372
2008-12-31	1223
2009-03-31	1238
2009-06-30	1288
2009-09-30	1279
2009-12-31	1331
2010-03-31	1362
2010-06-30	1305
2010-09-30	1345
2010-12-31	1334
2011-03-31	1379
2011-06-30	1487
2011-09-30	1519
2011-12-31	1478
2012-03-31	1659
2012-06-30	2008
2012-09-30	1696
2012-12-31	1751
2013-03-31	1690
2013-06-30	1746
2013-09-30	1770
2013-12-31	1825
2014-03-31	1882
2014-06-30	1693
2014-09-30	1876
2014-12-31	1792
2015-03-31	1505
2015-06-30	1439
2015-09-30	1389
2015-12-31	1359
2016-03-31	1385
2016-06-30	1383
2016-09-30	1304
2016-12-31	1188
2017-03-31	1337
2017-06-30	981
2017-09-30	1217
2017-12-31	1136
2018-03-31	1125
2018-06-30	1072
2018-09-30	1026
2018-12-31	1080
2019-03-31	1055
2019-06-30	1182
2019-09-30	1003
2019-12-31	871
2020-03-31	686
2020-06-30	493
2020-09-30	459
2020-12-31	348
2021-03-31	392
2021-06-30	357
2021-09-30	359
2021-12-31	332
2022-03-31	334
2022-06-30	331
2022-09-30	340
2022-12-31	366
2023-03-31	387
2023-06-30	658
2023-09-30	672