Quarterly US dollars
1999-03-31 4386
1999-06-30 4299
1999-09-30 3999
1999-12-31 4282
2000-03-31 4297
2000-06-30 3898
2000-09-30 4063
2000-12-31 4060
2001-03-31 4506
2001-06-30 3598
2001-09-30 4375
2001-12-31 3749
2002-03-31 3482
2002-06-30 3591
2002-09-30 3190
2002-12-31 3703
2003-03-31 3696
2003-06-30 3675
2003-09-30 4566
2003-12-31 3113
2004-03-31 3676
2004-06-30 3881
2004-09-30 3986
2004-12-31 4518
2005-03-31 4281
2005-06-30 5043
2005-09-30 5021
2005-12-31 6093
2006-03-31 7160
2006-06-30 6909
2006-09-30 7783
2006-12-31 7891
2007-03-31 7937
2007-06-30 7677
2007-09-30 8150
2007-12-31 10922
2008-03-31 10638
2008-06-30 10660
2008-09-30 11127
2008-12-31 12439
2009-03-31 10075
2009-06-30 9483
2009-09-30 9545
2009-12-31 7845
2010-03-31 7456
2010-06-30 6926
2010-09-30 8142
2010-12-31 8671
2011-03-31 8016
2011-06-30 6759
2011-09-30 7175
2011-12-31 6283
2012-03-31 7150
2012-06-30 7004
2012-09-30 6423
2012-12-31 7323
2013-03-31 6198
2013-06-30 7168
2013-09-30 6349
2013-12-31 7588
2014-03-31 8026
2014-06-30 8766
2014-09-30 8332
2014-12-31 9600
2015-03-31 9888
2015-06-30 8529
2015-09-30 8828
2015-12-31 8936
2016-03-31 7275
2016-06-30 6832
2016-09-30 7181
2016-12-31 6878
2017-03-31 6733
2017-06-30 6573
2017-09-30 7233
2017-12-31 8295
2018-03-31 8227
2018-06-30 8233
2018-09-30 6144
2018-12-31 8134
2019-03-31 7439
2019-06-30 8112
2019-09-30 7108
2019-12-31 8377
2020-03-31 6934
2020-06-30 6722
2020-09-30 6723
2020-12-31 6212
2021-03-31 5401
2021-06-30 4756
2021-09-30 4249
2021-12-31 4369
2022-03-31 4576
2022-06-30 6235
2022-09-30 5760
2022-12-31 7623
2023-03-31 5723
2023-06-30 6192
2023-09-30 6656