Quarterly US dollars
1986-09-30 38418
1986-12-31 41322
1987-03-31 45836
1987-06-30 41842
1987-09-30 39654
1987-12-31 46570
1988-03-31 42296
1988-06-30 36534
1988-09-30 37072
1988-12-31 36725
1989-03-31 32860
1989-06-30 32913
1989-09-30 33545
1989-12-31 34996
1990-03-31 38301
1990-06-30 39032
1990-09-30 46761
1990-12-31 44920
1991-03-31 40232
1991-06-30 39065
1991-09-30 37804
1991-12-31 39847
1992-03-31 36512
1992-06-30 39758
1992-09-30 47020
1992-12-31 39980
1993-03-31 33382
1993-06-30 30803
1993-09-30 31125
1993-12-31 30786
1994-03-31 30946
1994-06-30 33784
1994-09-30 35882
1994-12-31 35235
1995-03-31 40060
1995-06-30 42131
1995-09-30 40287
1995-12-31 36400
1996-03-31 38879
1996-06-30 36097
1996-09-30 40001
1996-12-31 37660
1997-03-31 38423
1997-06-30 40837
1997-09-30 42783
1997-12-31 49194
1998-03-31 46674
1998-06-30 46206
1998-09-30 53355
1998-12-31 55007
1999-03-31 52057
1999-06-30 51956
1999-09-30 52238
1999-12-31 46216
2000-03-31 54407
2000-06-30 51223
2000-09-30 47903
2000-12-31 50989
2001-03-31 50611
2001-06-30 43878
2001-09-30 49170
2001-12-31 45577
2002-03-31 44977
2002-06-30 46991
2002-09-30 46763
2002-12-31 45890
2003-03-31 49638
2003-06-30 51007
2003-09-30 50278
2003-12-31 50061
2004-03-31 52567
2004-06-30 49403
2004-09-30 49913
2004-12-31 47811
2005-03-31 50012
2005-06-30 52491
2005-09-30 47880
2005-12-31 48595
2006-03-31 59594
2006-06-30 57195
2006-09-30 51843
2006-12-31 52916
2007-03-31 54284
2007-06-30 61047
2007-09-30 71709
2007-12-31 73562
2008-03-31 84077
2008-06-30 80458
2008-09-30 72407
2008-12-31 67081
2009-03-31 66001
2009-06-30 66369
2009-09-30 61699
2009-12-31 64095
2010-03-31 58767
2010-06-30 65568
2010-09-30 76217
2010-12-31 85437
2011-03-31 93035
2011-06-30 105462
2011-09-30 137523
2011-12-31 154193
2012-03-31 116960
2012-06-30 129816
2012-09-30 146864
2012-12-31 141461
2013-03-31 147483
2013-06-30 116043
2013-09-30 121549
2013-12-31 132352
2014-03-31 123980
2014-06-30 111748
2014-09-30 124281
2014-12-31 104233
2015-03-31 105371
2015-06-30 97315
2015-09-30 94741
2015-12-31 91967