Quarter	Millions of US Dollars
1962-10-01	0
1963-01-01	0
1963-04-01	0
1963-07-01	0
1963-10-01	0
1964-01-01	0
1964-04-01	0
1964-07-01	0
1964-10-01	0
1965-01-01	0
1965-04-01	0
1965-07-01	0
1965-10-01	0
1966-01-01	0
1966-04-01	0
1966-07-01	0
1966-10-01	0
1967-01-01	0
1967-04-01	0
1967-07-01	0
1967-10-01	0
1968-01-01	0
1968-04-01	0
1968-07-01	0
1968-10-01	0
1969-01-01	0
1969-04-01	0
1969-07-01	0
1969-10-01	0
1970-01-01	0
1970-04-01	0
1970-07-01	0
1970-10-01	0
1971-01-01	0
1971-04-01	0
1971-07-01	0
1971-10-01	0
1972-01-01	0
1972-04-01	0
1972-07-01	0
1972-10-01	0
1973-01-01	0
1973-04-01	0
1973-07-01	0
1973-10-01	0
1974-01-01	0
1974-04-01	0
1974-07-01	0
1974-10-01	0
1975-01-01	0
1975-04-01	8
1975-07-01	8
1975-10-01	50
1976-01-01	91
1976-04-01	137
1976-07-01	261
1976-10-01	306
1977-01-01	446
1977-04-01	432
1977-07-01	388
1977-10-01	509
1978-01-01	596
1978-04-01	968
1978-07-01	1769
1978-10-01	2779
1979-01-01	3566
1979-04-01	4425
1979-07-01	5299
1979-10-01	6079
1980-01-01	6161
1980-04-01	7689
1980-07-01	7855
1980-10-01	8586
1981-01-01	9548
1981-04-01	9813
1981-07-01	10317
1981-10-01	10772
1982-01-01	11319
1982-04-01	12427
1982-07-01	13193
1982-10-01	13764
1983-01-01	13586
1983-04-01	13710
1983-07-01	13618
1983-10-01	13310
1984-01-01	16836
1984-04-01	16742
1984-07-01	19673
1984-10-01	33347
1985-01-01	35505
1985-04-01	38884
1985-07-01	41931
1985-10-01	38257
1986-01-01	39259
1986-04-01	43016
1986-07-01	47668
1986-10-01	47953
1987-01-01	53033
1987-04-01	52604
1987-07-01	53424
1987-10-01	62121
1988-01-01	61747
1988-04-01	64911
1988-07-01	68229
1988-10-01	70916
1989-01-01	70988
1989-04-01	72966
1989-07-01	76682
1989-10-01	82288
1990-01-01	90077
1990-04-01	96837
1990-07-01	105009
1990-10-01	119084
1991-01-01	125665
1991-04-01	135596
1991-07-01	156926
1991-10-01	161188
1992-01-01	173750
1992-04-01	211322
1992-07-01	232658
1992-10-01	234042
1993-01-01	227356
1993-04-01	199417
1993-07-01	282606
1993-10-01	269936
1994-01-01	267780
1994-04-01	269875
1994-07-01	279421
1994-10-01	280097
1995-01-01	309376
1995-04-01	336291
1995-07-01	345989
1995-10-01	360479
1996-01-01	367845
1996-04-01	382319
1996-07-01	327618
1996-10-01	423651
1997-01-01	426770
1997-04-01	444360
1997-07-01	450937
1997-10-01	439387
1998-01-01	457788
1998-04-01	448767
1998-07-01	480916
1998-10-01	503783
1999-01-01	514126
1999-04-01	541880
1999-07-01	623941
1999-10-01	651224
2000-01-01	685765
2000-04-01	746037
2000-07-01	745719
2000-10-01	830603
2001-01-01	847062
2001-04-01	843554
2001-07-01	886794
2001-10-01	905728
2002-01-01	984129
2002-04-01	1108117
2002-07-01	1130457
2002-10-01	1168310
2003-01-01	1254166
2003-04-01	1351609
2003-07-01	1379990
2003-10-01	1525645
2004-01-01	1546441
2004-04-01	1542131
2004-07-01	1632051
2004-10-01	1762419
2005-01-01	1775064
2005-04-01	1773302
2005-07-01	1799664
2005-10-01	1865011
2006-01-01	1973844
2006-04-01	2058606
2006-07-01	2107961
2006-10-01	2154623
2007-01-01	2315893
2007-04-01	2476756
2007-07-01	2605568
2007-10-01	2756171
2008-01-01	3118385
2008-04-01	3212583
2008-07-01	2985732
2008-10-01	2756391
2009-01-01	2615586
2009-04-01	2790369
2009-07-01	2932817
2009-10-01	2845578
2010-01-01	2858203
2010-04-01	2716767
2010-07-01	2903528
2010-10-01	2845180
2011-01-01	3116907
2011-04-01	3170315
2011-07-01	3100577
2011-10-01	3023693
2012-01-01	3070941
2012-04-01	2902938
2012-07-01	2885915
2012-10-01	2912145
2013-01-01	2906912
2013-04-01	2931708
2013-07-01	3035895
2013-10-01	3085848
2014-01-01	3013074
2014-04-01	2942583
2014-07-01	2838249
2014-10-01	2754704
2015-01-01	2559546
2015-04-01	2632016
2015-07-01	2613939
2015-10-01	2522428
2016-01-01	2758643
2016-04-01	2749633
2016-07-01	2773097
2016-10-01	2653134
2017-01-01	2577364
2017-04-01	2583242
2017-07-01	2525114
2017-10-01	2502909
2018-01-01	2532472
2018-04-01	2435703