Quarter	US dollars
1999-03-31	1024056
1999-06-30	969431
1999-09-30	1033473
1999-12-31	1003426
2000-03-31	1068156
2000-06-30	1079542
2000-09-30	1048277
2000-12-31	1155104
2001-03-31	1201958
2001-06-30	1116422
2001-09-30	1164969
2001-12-31	1193622
2002-03-31	1100475
2002-06-30	1158611
2002-09-30	1193110
2002-12-31	1335656
2003-03-31	1338226
2003-06-30	1467507
2003-09-30	1388434
2003-12-31	1576704
2004-03-31	1744018
2004-06-30	1753012
2004-09-30	1753341
2004-12-31	1834988
2005-03-31	1923754
2005-06-30	1918835
2005-09-30	1913209
2005-12-31	1917705
2006-03-31	2094495
2006-06-30	2203977
2006-09-30	2252644
2006-12-31	2268384
2007-03-31	2619156
2007-06-30	2649062
2007-09-30	2854119
2007-12-31	3087772
2008-03-31	3484914
2008-06-30	3111978
2008-09-30	2939230
2008-12-31	2738412
2009-03-31	2608591
2009-06-30	2729389
2009-09-30	2631019
2009-12-31	2632054
2010-03-31	2601635
2010-06-30	2524423
2010-09-30	2699100
2010-12-31	2458641
2011-03-31	2522703
2011-06-30	2480286
2011-09-30	2788983
2011-12-31	2611964
2012-03-31	2734886
2012-06-30	2509730
2012-09-30	2504351
2012-12-31	2411314
2013-03-31	2262388
2013-06-30	2198481
2013-09-30	2129043
2013-12-31	2039586
2014-03-31	2074041
2014-06-30	2042408
2014-09-30	1980232
2014-12-31	1933349
2015-03-31	1825792
2015-06-30	1848582
2015-09-30	1824158
2015-12-31	1828027
2016-03-31	1794928
2016-06-30	1874884
2016-09-30	1910475
2016-12-31	1882026
2017-03-31	1859562
2017-06-30	1962778
2017-09-30	2060462
2017-12-31	2159263
2018-03-31	2198386
2018-06-30	2097375
2018-09-30	2037146
2018-12-31	2058834
2019-03-31	2009550
2019-06-30	2019056
2019-09-30	1977519
2019-12-31	1952817
2020-03-31	2149633
2020-06-30	2053449
2020-09-30	2140328
2020-12-31	2265775
2021-03-31	2312777
2021-06-30	2327839
2021-09-30	2301212
2021-12-31	2342719
2022-03-31	2461157
2022-06-30	2465186
2022-09-30	2397554
2022-12-31	2357783
2023-03-31	2431603
2023-06-30	2396713
2023-09-30	2406821