Quarter	US dollars
1999-09-30	558698
1999-12-31	564032
2000-03-31	648447
2000-06-30	636054
2000-09-30	647450
2000-12-31	715625
2001-03-31	766988
2001-06-30	725522
2001-09-30	760878
2001-12-31	787918
2002-03-31	818992
2002-06-30	870232
2002-09-30	941648
2002-12-31	948679
2003-03-31	1103733
2003-06-30	1148205
2003-09-30	1206167
2003-12-31	1190820
2004-03-31	1323330
2004-06-30	1371707
2004-09-30	1521555
2004-12-31	1596374
2005-03-31	1755182
2005-06-30	1751337
2005-09-30	1896836
2005-12-31	1791392
2006-03-31	2028784
2006-06-30	2109464
2006-09-30	2232361
2006-12-31	2255519
2007-03-31	2527011
2007-06-30	2539661
2007-09-30	2803872
2007-12-31	2739486
2008-03-31	3084183
2008-06-30	2908607
2008-09-30	3062842
2008-12-31	2600535
2009-03-31	2550909
2009-06-30	2585473
2009-09-30	2584368
2009-12-31	2515175
2010-03-31	2683563
2010-06-30	2647319
2010-09-30	2734225
2010-12-31	2559680
2011-03-31	2640866
2011-06-30	2643908
2011-09-30	2664663
2011-12-31	2530550
2012-03-31	2723822
2012-06-30	2590130
2012-09-30	2555066
2012-12-31	2508283
2013-03-31	2306838
2013-06-30	2368277
2013-09-30	2327688
2013-12-31	2198900
2014-03-31	2221054
2014-06-30	2164427
2014-09-30	2058493
2014-12-31	2010705
2015-03-31	1952799
2015-06-30	1871032
2015-09-30	1728818
2015-12-31	1655528
2016-03-31	1690524
2016-06-30	1776736
2016-09-30	1702764
2016-12-31	1633580
2017-03-31	1763348
2017-06-30	1885165
2017-09-30	1937592
2017-12-31	1975985
2018-03-31	2057344
2018-06-30	1979168
2018-09-30	1974341
2018-12-31	1926997
2019-03-31	2028185
2019-06-30	2094191
2019-09-30	2090487
2019-12-31	2045991
2020-03-31	2285689
2020-06-30	2269408
2020-09-30	2325922
2020-12-31	2373246
2021-03-31	2402267
2021-06-30	2452236
2021-09-30	2477100
2021-12-31	2464658
2022-03-31	2510624
2022-06-30	2412485
2022-09-30	2366357
2022-12-31	2413214
2023-03-31	2546617
2023-06-30	2697949
2023-09-30	2701066