Quarterly US dollars
1999-03-31 32188
1999-06-30 31260
1999-09-30 29911
1999-12-31 26557
2000-03-31 29624
2000-06-30 27566
2000-09-30 27879
2000-12-31 24047
2001-03-31 23959
2001-06-30 25704
2001-09-30 23387
2001-12-31 21220
2002-03-31 26885
2002-06-30 27145
2002-09-30 29840
2002-12-31 27294
2003-03-31 35187
2003-06-30 34114
2003-09-30 38551
2003-12-31 39588
2004-03-31 52139
2004-06-30 50596
2004-09-30 59825
2004-12-31 58890
2005-03-31 67156
2005-06-30 55720
2005-09-30 70039
2005-12-31 54772
2006-03-31 71829
2006-06-30 70559
2006-09-30 83323
2006-12-31 69762
2007-03-31 92126
2007-06-30 101307
2007-09-30 96405
2007-12-31 101989
2008-03-31 126651
2008-06-30 103770
2008-09-30 94152
2008-12-31 72641
2009-03-31 68943
2009-06-30 71568
2009-09-30 76353
2009-12-31 85011
2010-03-31 97199
2010-06-30 103401
2010-09-30 106670
2010-12-31 107688
2011-03-31 126060
2011-06-30 135776
2011-09-30 133896
2011-12-31 123885
2012-03-31 121286
2012-06-30 117498
2012-09-30 114885
2012-12-31 118700
2013-03-31 143936
2013-06-30 153474
2013-09-30 147731
2013-12-31 152961
2014-03-31 169473
2014-06-30 164539
2014-09-30 152096
2014-12-31 135015
2015-03-31 134936
2015-06-30 132087
2015-09-30 124395
2015-12-31 113280
2016-03-31 110671
2016-06-30 110442
2016-09-30 104559
2016-12-31 105272
2017-03-31 110027
2017-06-30 121334
2017-09-30 133095
2017-12-31 139571
2018-03-31 130864
2018-06-30 121276
2018-09-30 133234
2018-12-31 138407
2019-03-31 141174
2019-06-30 137369
2019-09-30 125225
2019-12-31 129423
2020-03-31 138069
2020-06-30 120714
2020-09-30 121396
2020-12-31 130069
2021-03-31 132300
2021-06-30 128923
2021-09-30 133509
2021-12-31 140832
2022-03-31 134635
2022-06-30 135333
2022-09-30 142421
2022-12-31 138854
2023-03-31 136297
2023-06-30 126535
2023-09-30 140703