Quarter	US dollars
2004-12-31	21555
2005-03-31	24605
2005-06-30	22804
2005-09-30	30641
2005-12-31	37097
2006-03-31	40442
2006-06-30	47837
2006-09-30	51897
2006-12-31	54487
2007-03-31	59478
2007-06-30	58593
2007-09-30	70364
2007-12-31	67267
2008-03-31	88833
2008-06-30	82993
2008-09-30	73298
2008-12-31	54849
2009-03-31	50236
2009-06-30	51117
2009-09-30	55392
2009-12-31	57288
2010-03-31	69612
2010-06-30	69736
2010-09-30	77055
2010-12-31	89404
2011-03-31	96906
2011-06-30	117707
2011-09-30	124537
2011-12-31	112867
2012-03-31	119675
2012-06-30	117756
2012-09-30	110832
2012-12-31	104938
2013-03-31	126828
2013-06-30	125316
2013-09-30	134222
2013-12-31	127196
2014-03-31	147446
2014-06-30	137721
2014-09-30	129521
2014-12-31	111777
2015-03-31	111985
2015-06-30	98344
2015-09-30	86801
2015-12-31	75220
2016-03-31	71729
2016-06-30	66639
2016-09-30	68843
2016-12-31	67337
2017-03-31	71705
2017-06-30	77470
2017-09-30	82605
2017-12-31	82006
2018-03-31	82623
2018-06-30	84201
2018-09-30	81741
2018-12-31	80534
2019-03-31	82772
2019-06-30	83689
2019-09-30	75114
2019-12-31	70795
2020-03-31	78448
2020-06-30	69951
2020-09-30	68893
2020-12-31	75905
2021-03-31	81332
2021-06-30	79237
2021-09-30	78265
2021-12-31	84014
2022-03-31	79800
2022-06-30	77476
2022-09-30	79654
2022-12-31	77529
2023-03-31	81049
2023-06-30	84692
2023-09-30	89774