Quarterly US dollars
1999-03-31 3812
1999-06-30 3906
1999-09-30 3932
1999-12-31 4171
2000-03-31 3850
2000-06-30 3865
2000-09-30 3580
2000-12-31 3589
2001-03-31 3293
2001-06-30 3250
2001-09-30 3437
2001-12-31 3667
2002-03-31 3321
2002-06-30 3389
2002-09-30 3205
2002-12-31 2992
2003-03-31 3260
2003-06-30 3293
2003-09-30 3275
2003-12-31 3207
2004-03-31 3168
2004-06-30 3131
2004-09-30 3653
2004-12-31 3515
2005-03-31 3481
2005-06-30 3333
2005-09-30 3501
2005-12-31 3081
2006-03-31 3136
2006-06-30 2909
2006-09-30 2614
2006-12-31 2732
2007-03-31 3068
2007-06-30 4544
2007-09-30 7044
2007-12-31 8194
2008-03-31 8937
2008-06-30 9184
2008-09-30 9553
2008-12-31 9134
2009-03-31 8570
2009-06-30 9544
2009-09-30 9485
2009-12-31 8783
2010-03-31 8755
2010-06-30 7494
2010-09-30 6689
2010-12-31 8823
2011-03-31 8335
2011-06-30 8816
2011-09-30 9060
2011-12-31 6967
2012-03-31 6880
2012-06-30 6550
2012-09-30 6565
2012-12-31 5897
2013-03-31 5921
2013-06-30 6049
2013-09-30 6299
2013-12-31 6350
2014-03-31 7440
2014-06-30 7262
2014-09-30 8135
2014-12-31 7627
2015-03-31 7407
2015-06-30 8267
2015-09-30 8622
2015-12-31 10756
2016-03-31 11438
2016-06-30 17361
2016-09-30 19485
2016-12-31 19365
2017-03-31 18424
2017-06-30 18614
2017-09-30 18523
2017-12-31 18994
2018-03-31 20313
2018-06-30 22213
2018-09-30 20439
2018-12-31 20914
2019-03-31 22613
2019-06-30 22307
2019-09-30 21404
2019-12-31 24999
2020-03-31 27197
2020-06-30 27639
2020-09-30 20802
2020-12-31 25196
2021-03-31 22645
2021-06-30 20925
2021-09-30 21707
2021-12-31 21711
2022-03-31 24536
2022-06-30 27784
2022-09-30 24393
2022-12-31 24350
2023-03-31 17727
2023-06-30 21089
2023-09-30 18654