Quarterly US dollars
1999-03-31 38199
1999-06-30 31320
1999-09-30 28785
1999-12-31 26783
2000-03-31 28710
2000-06-30 25092
2000-09-30 24021
2000-12-31 24683
2001-03-31 27063
2001-06-30 26663
2001-09-30 27876
2001-12-31 28169
2002-03-31 26368
2002-06-30 30898
2002-09-30 32773
2002-12-31 31327
2003-03-31 34821
2003-06-30 37759
2003-09-30 44730
2003-12-31 71567
2004-03-31 83411
2004-06-30 98494
2004-09-30 102799
2004-12-31 104896
2005-03-31 109196
2005-06-30 119922
2005-09-30 133889
2005-12-31 135301
2006-03-31 137731
2006-06-30 128434
2006-09-30 139834
2006-12-31 151751
2007-03-31 152065
2007-06-30 157125
2007-09-30 164177
2007-12-31 172435
2008-03-31 235725
2008-06-30 227905
2008-09-30 210753
2008-12-31 206798
2009-03-31 232590
2009-06-30 239821
2009-09-30 226191
2009-12-31 224630
2010-03-31 214778
2010-06-30 186023
2010-09-30 200979
2010-12-31 180546
2011-03-31 192477
2011-06-30 206403
2011-09-30 170197
2011-12-31 152291
2012-03-31 147112
2012-06-30 149969
2012-09-30 141881
2012-12-31 142322
2013-03-31 137453
2013-06-30 133147
2013-09-30 87871
2013-12-31 88480
2014-03-31 81163
2014-06-30 75815
2014-09-30 67659
2014-12-31 35696
2015-03-31 34317
2015-06-30 31216
2015-09-30 30852
2015-12-31 28141
2016-03-31 29141
2016-06-30 30897
2016-09-30 26177
2016-12-31 22319
2017-03-31 25581
2017-06-30 26777
2017-09-30 28008
2017-12-31 32037
2018-03-31 30045
2018-06-30 30353
2018-09-30 25329
2018-12-31 24527
2019-03-31 17454
2019-06-30 15592
2019-09-30 15741
2019-12-31 15102
2020-03-31 19081
2020-06-30 17866
2020-09-30 15241
2020-12-31 17667
2021-03-31 13258
2021-06-30 10463
2021-09-30 16392
2021-12-31 19010
2022-03-31 19090
2022-06-30 20466
2022-09-30 21924
2022-12-31 24359
2023-03-31 27050
2023-06-30 32853
2023-09-30 29327