Quarter	Millions of US Dollars
1973-10-01	25
1974-01-01	25
1974-04-01	25
1974-07-01	25
1974-10-01	25
1975-01-01	25
1975-04-01	25
1975-07-01	25
1975-10-01	25
1976-01-01	25
1976-04-01	25
1976-07-01	25
1976-10-01	25
1977-01-01	25
1977-04-01	25
1977-07-01	25
1977-10-01	25
1978-01-01	25
1978-04-01	25
1978-07-01	25
1978-10-01	25
1979-01-01	25
1979-04-01	25
1979-07-01	25
1993-07-01	152
1993-10-01	164
1994-01-01	223
1994-04-01	188
1994-07-01	240
1994-10-01	234
1995-01-01	229
1995-04-01	245
1995-07-01	245
1995-10-01	245
1996-01-01	245
1996-04-01	245
1996-07-01	245
1996-10-01	250
1997-01-01	475
1997-04-01	440
1997-07-01	440
1997-10-01	362
1998-01-01	418
1998-04-01	470
1998-07-01	475
1998-10-01	296
1999-01-01	284
1999-04-01	494
1999-07-01	470
1999-10-01	372
2000-01-01	395
2000-04-01	366
2000-07-01	360
2000-10-01	354
2001-01-01	390
2001-04-01	324
2001-07-01	225
2001-10-01	225
2015-10-01	650
2016-01-01	650
2016-04-01	4650
2016-07-01	5150
2016-10-01	7650
2017-01-01	14650
2017-04-01	16650
2017-07-01	16650
2017-10-01	16650
2018-01-01	22437
2018-04-01	22511