Quarterly US dollars
1999-03-31 47947
1999-06-30 44598
1999-09-30 46305
1999-12-31 48459
2000-03-31 49707
2000-06-30 52097
2000-09-30 60581
2000-12-31 64279
2001-03-31 72918
2001-06-30 71427
2001-09-30 73549
2001-12-31 66238
2002-03-31 58300
2002-06-30 61077
2002-09-30 60056
2002-12-31 68867
2003-03-31 74647
2003-06-30 69994
2003-09-30 72440
2003-12-31 76177
2004-03-31 83485
2004-06-30 82854
2004-09-30 99061
2004-12-31 92658
2005-03-31 92785
2005-06-30 102738
2005-09-30 115815
2005-12-31 117535
2006-03-31 132286
2006-06-30 137974
2006-09-30 154045
2006-12-31 161231
2007-03-31 159768
2007-06-30 161593
2007-09-30 177039
2007-12-31 224106
2008-03-31 231339
2008-06-30 194874
2008-09-30 215600
2008-12-31 202806
2009-03-31 161867
2009-06-30 161189
2009-09-30 164419
2009-12-31 174375
2010-03-31 165596
2010-06-30 154225
2010-09-30 143221
2010-12-31 155196
2011-03-31 170150
2011-06-30 172704
2011-09-30 166325
2011-12-31 174313
2012-03-31 194184
2012-06-30 212361
2012-09-30 185972
2012-12-31 180100
2013-03-31 188409
2013-06-30 174467
2013-09-30 184385
2013-12-31 194749
2014-03-31 192414
2014-06-30 188064
2014-09-30 189012
2014-12-31 182280
2015-03-31 167920
2015-06-30 179200
2015-09-30 186783
2015-12-31 179198
2016-03-31 169156
2016-06-30 167231
2016-09-30 159503
2016-12-31 161648
2017-03-31 179442
2017-06-30 180686
2017-09-30 178397
2017-12-31 180710
2018-03-31 195723
2018-06-30 182888
2018-09-30 180573
2018-12-31 175000
2019-03-31 186098
2019-06-30 199438
2019-09-30 174992
2019-12-31 178035
2020-03-31 170113
2020-06-30 157226
2020-09-30 152191
2020-12-31 149541
2021-03-31 150846
2021-06-30 144817
2021-09-30 143403
2021-12-31 133481
2022-03-31 140364
2022-06-30 161218
2022-09-30 150530
2022-12-31 139342
2023-03-31 153387
2023-06-30 169562
2023-09-30 152816