Quarterly US dollars
1999-03-31 28101
1999-06-30 29274
1999-09-30 24773
1999-12-31 19421
2000-03-31 18920
2000-06-30 18267
2000-09-30 19901
2000-12-31 19037
2001-03-31 22538
2001-06-30 20386
2001-09-30 22032
2001-12-31 28307
2002-03-31 29995
2002-06-30 32806
2002-09-30 37034
2002-12-31 42058
2003-03-31 43512
2003-06-30 54128
2003-09-30 71485
2003-12-31 77847
2004-03-31 78759
2004-06-30 87646
2004-09-30 96884
2004-12-31 119188
2005-03-31 141653
2005-06-30 146699
2005-09-30 142914
2005-12-31 152545
2006-03-31 156468
2006-06-30 191149
2006-09-30 155745
2006-12-31 165312
2007-03-31 188289
2007-06-30 194107
2007-09-30 194828
2007-12-31 198492
2008-03-31 223520
2008-06-30 171602
2008-09-30 180794
2008-12-31 148404
2009-03-31 123767
2009-06-30 116085
2009-09-30 104668
2009-12-31 142991
2010-03-31 124232
2010-06-30 100372
2010-09-30 104466
2010-12-31 121905
2011-03-31 126668
2011-06-30 131762
2011-09-30 91876
2011-12-31 84059
2012-03-31 87812
2012-06-30 80867
2012-09-30 80712
2012-12-31 75538
2013-03-31 94208
2013-06-30 91308
2013-09-30 99850
2013-12-31 97082
2014-03-31 100087
2014-06-30 117954
2014-09-30 135635
2014-12-31 123990
2015-03-31 119804
2015-06-30 116758
2015-09-30 128347
2015-12-31 115421
2016-03-31 116663
2016-06-30 120839
2016-09-30 111079
2016-12-31 126800
2017-03-31 112557
2017-06-30 110379
2017-09-30 128776
2017-12-31 150973
2018-03-31 139782
2018-06-30 130388
2018-09-30 130334
2018-12-31 131596
2019-03-31 129001
2019-06-30 121153
2019-09-30 97729
2019-12-31 111080
2020-03-31 115955
2020-06-30 106177
2020-09-30 106195
2020-12-31 116909
2021-03-31 121417
2021-06-30 133482
2021-09-30 130882
2021-12-31 163201
2022-03-31 162712
2022-06-30 157593
2022-09-30 129611
2022-12-31 127401
2023-03-31 124100
2023-06-30 119352
2023-09-30 109757