Quarterly US dollars
1986-09-30 67
1986-12-31 56
1987-03-31 53
1987-06-30 56
1987-09-30 53
1987-12-31 55
1988-03-31 46
1988-06-30 37
1988-09-30 36
1988-12-31 25
1989-03-31 22
1989-06-30 24
1989-09-30 19
1989-12-31 22
1990-03-31 29
1990-06-30 32
1990-09-30 34
1990-12-31 36
1991-03-31 27
1991-06-30 17
1991-09-30 19
1991-12-31 26
1992-03-31 24
1992-06-30 26
1992-09-30 23
1992-12-31 18
1993-03-31 18
1993-06-30 20
1993-09-30 28
1993-12-31 26
1994-03-31 27
1994-06-30 25
1994-09-30 25
1994-12-31 27
1995-03-31 29
1995-06-30 25
1995-09-30 24
1995-12-31 30
1996-03-31 22
1996-06-30 18
1996-09-30 24
1996-12-31 39
1997-03-31 44
1997-06-30 44
1997-09-30 57
1997-12-31 80
1998-03-31 80
1998-06-30 67
1998-09-30 78
1998-12-31 88
1999-03-31 80
1999-06-30 84
1999-09-30 85
1999-12-31 105
2000-03-31 108
2000-06-30 162
2000-09-30 203
2000-12-31 233
2001-03-31 273
2001-06-30 254
2001-09-30 251
2001-12-31 250
2002-03-31 234
2002-06-30 256
2002-09-30 249
2002-12-31 266
2003-03-31 236
2003-06-30 220
2003-09-30 233
2003-12-31 207
2004-03-31 196
2004-06-30 202
2004-09-30 179
2004-12-31 153
2005-03-31 156
2005-06-30 160
2005-09-30 158
2005-12-31 149
2006-03-31 191
2006-06-30 188
2006-09-30 168
2006-12-31 160
2007-03-31 119
2007-06-30 166
2007-09-30 174
2007-12-31 205
2008-03-31 177
2008-06-30 117
2008-09-30 121
2008-12-31 86
2009-03-31 60
2009-06-30 61
2009-09-30 121
2009-12-31 131
2010-03-31 135
2010-06-30 132
2010-09-30 122
2010-12-31 124
2011-03-31 124
2011-06-30 116
2011-09-30 147
2011-12-31 167
2012-03-31 168
2012-06-30 389
2012-09-30 422
2012-12-31 521
2013-03-31 424
2013-06-30 431
2013-09-30 522
2013-12-31 616
2014-03-31 605
2014-06-30 591
2014-09-30 574
2014-12-31 616
2015-03-31 604
2015-06-30 585
2015-09-30 628
2015-12-31 646
2016-03-31 643
2016-06-30 658
2016-09-30 683
2016-12-31 602
2017-03-31 543
2017-06-30 666
2017-09-30 678
2017-12-31 621
2018-03-31 603
2018-06-30 754
2018-09-30 730
2018-12-31 731
2019-03-31 814
2019-06-30 878
2019-09-30 922
2019-12-31 723
2020-03-31 688
2020-06-30 656
2020-09-30 896
2020-12-31 823
2021-03-31 855
2021-06-30 812
2021-09-30 796
2021-12-31 724
2022-03-31 712
2022-06-30 650
2022-09-30 657
2022-12-31 659
2023-03-31 612
2023-06-30 788
2023-09-30 824