Quarterly US dollars
1999-03-31 19656
1999-06-30 19756
1999-09-30 19043
1999-12-31 20815
2000-03-31 25335
2000-06-30 24099
2000-09-30 28164
2000-12-31 28407
2001-03-31 34446
2001-06-30 35069
2001-09-30 37764
2001-12-31 38172
2002-03-31 42462
2002-06-30 45103
2002-09-30 48262
2002-12-31 48322
2003-03-31 52989
2003-06-30 56201
2003-09-30 59979
2003-12-31 65529
2004-03-31 66330
2004-06-30 62748
2004-09-30 63024
2004-12-31 70414
2005-03-31 79387
2005-06-30 86755
2005-09-30 97489
2005-12-31 96917
2006-03-31 106574
2006-06-30 113641
2006-09-30 92372
2006-12-31 110204
2007-03-31 128146
2007-06-30 143648
2007-09-30 173270
2007-12-31 174195
2008-03-31 194832
2008-06-30 168658
2008-09-30 141799
2008-12-31 157260
2009-03-31 153719
2009-06-30 156835
2009-09-30 163639
2009-12-31 149310
2010-03-31 128836
2010-06-30 151397
2010-09-30 176770
2010-12-31 135819
2011-03-31 145400
2011-06-30 154831
2011-09-30 166549
2011-12-31 152932
2012-03-31 180726
2012-06-30 181167
2012-09-30 187394
2012-12-31 195678
2013-03-31 185705
2013-06-30 171592
2013-09-30 172572
2013-12-31 169156
2014-03-31 177026
2014-06-30 181266
2014-09-30 181584
2014-12-31 188160
2015-03-31 195867
2015-06-30 162953
2015-09-30 158931
2015-12-31 131934
2016-03-31 151055
2016-06-30 152548
2016-09-30 153690
2016-12-31 118434
2017-03-31 117725
2017-06-30 124361
2017-09-30 125484
2017-12-31 126190
2018-03-31 134005
2018-06-30 119320
2018-09-30 118866
2018-12-31 117834
2019-03-31 125565
2019-06-30 137556
2019-09-30 153138
2019-12-31 137254
2020-03-31 148529
2020-06-30 150599
2020-09-30 137853
2020-12-31 113442
2021-03-31 105439
2021-06-30 96791
2021-09-30 85616
2021-12-31 83856
2022-03-31 83154
2022-06-30 85727
2022-09-30 70528
2022-12-31 69572
2023-03-31 68372
2023-06-30 56758
2023-09-30 60315