Quarterly US dollars
1999-03-31 1562
1999-06-30 1602
1999-09-30 1661
1999-12-31 1656
2000-03-31 1753
2000-06-30 1694
2000-09-30 1502
2000-12-31 1635
2001-03-31 1547
2001-06-30 1868
2001-09-30 1654
2001-12-31 1553
2002-03-31 1539
2002-06-30 1416
2002-09-30 1506
2002-12-31 1562
2003-03-31 1570
2003-06-30 1525
2003-09-30 1516
2003-12-31 1697
2004-03-31 1851
2004-06-30 1833
2004-09-30 2336
2004-12-31 2230
2005-03-31 2326
2005-06-30 2370
2005-09-30 2855
2005-12-31 2660
2006-03-31 3151
2006-06-30 3919
2006-09-30 3756
2006-12-31 4949
2007-03-31 4310
2007-06-30 4165
2007-09-30 4263
2007-12-31 4064
2008-03-31 4108
2008-06-30 4088
2008-09-30 3757
2008-12-31 3746
2009-03-31 5133
2009-06-30 4028
2009-09-30 3812
2009-12-31 4303
2010-03-31 4223
2010-06-30 4064
2010-09-30 4223
2010-12-31 4294
2011-03-31 4453
2011-06-30 4811
2011-09-30 3621
2011-12-31 3222
2012-03-31 3152
2012-06-30 3434
2012-09-30 3715
2012-12-31 2487
2013-03-31 2587
2013-06-30 2578
2013-09-30 2760
2013-12-31 2729
2014-03-31 2714
2014-06-30 2874
2014-09-30 2787
2014-12-31 1979
2015-03-31 1824
2015-06-30 2041
2015-09-30 1868
2015-12-31 1929
2016-03-31 2452
2016-06-30 1905
2016-09-30 1933
2016-12-31 1848
2017-03-31 2214
2017-06-30 1953
2017-09-30 2189
2017-12-31 1850
2018-03-31 2227
2018-06-30 2059
2018-09-30 2278
2018-12-31 2718
2019-03-31 3162
2019-06-30 2714
2019-09-30 2915
2019-12-31 3298
2020-03-31 3728
2020-06-30 2388
2020-09-30 2792
2020-12-31 2927
2021-03-31 3057
2021-06-30 3043
2021-09-30 3092
2021-12-31 3342
2022-03-31 3328
2022-06-30 3335
2022-09-30 3383
2022-12-31 3085
2023-03-31 3295
2023-06-30 3060
2023-09-30 3162