Quarterly US dollars
1999-03-31 55946
1999-06-30 55940
1999-09-30 60083
1999-12-31 56381
2000-03-31 63509
2000-06-30 67727
2000-09-30 64144
2000-12-31 65421
2001-03-31 84036
2001-06-30 78623
2001-09-30 92244
2001-12-31 93179
2002-03-31 85206
2002-06-30 91305
2002-09-30 99255
2002-12-31 121595
2003-03-31 133141
2003-06-30 141489
2003-09-30 129701
2003-12-31 138136
2004-03-31 159544
2004-06-30 152278
2004-09-30 158452
2004-12-31 181771
2005-03-31 190538
2005-06-30 190200
2005-09-30 219387
2005-12-31 200343
2006-03-31 270946
2006-06-30 272293
2006-09-30 289011
2006-12-31 320346
2007-03-31 352766
2007-06-30 343273
2007-09-30 350597
2007-12-31 426253
2008-03-31 410273
2008-06-30 377253
2008-09-30 319755
2008-12-31 327793
2009-03-31 289897
2009-06-30 268903
2009-09-30 294620
2009-12-31 261951
2010-03-31 194463
2010-06-30 169741
2010-09-30 183557
2010-12-31 127146
2011-03-31 251007
2011-06-30 233334
2011-09-30 221177
2011-12-31 181369
2012-03-31 174313
2012-06-30 142973
2012-09-30 130382
2012-12-31 141375
2013-03-31 118392
2013-06-30 113172
2013-09-30 117195
2013-12-31 123739
2014-03-31 132076
2014-06-30 134788
2014-09-30 128634
2014-12-31 134535
2015-03-31 129813
2015-06-30 121149
2015-09-30 132187
2015-12-31 116316
2016-03-31 111584
2016-06-30 105993
2016-09-30 103591
2016-12-31 83230
2017-03-31 83570
2017-06-30 106545
2017-09-30 133070
2017-12-31 147366
2018-03-31 158690
2018-06-30 145350
2018-09-30 128276
2018-12-31 119984
2019-03-31 117534
2019-06-30 123591
2019-09-30 111403
2019-12-31 101021
2020-03-31 93964
2020-06-30 98117
2020-09-30 99829
2020-12-31 90571
2021-03-31 85877
2021-06-30 83658
2021-09-30 82928
2021-12-31 80325
2022-03-31 69800
2022-06-30 63768
2022-09-30 61543
2022-12-31 63425
2023-03-31 62880
2023-06-30 59938
2023-09-30 58552