1date,value21989-07-01,35.731989-10-01,35.741990-01-01,36.051990-04-01,36.161990-07-01,36.671990-10-01,36.381991-01-01,36.291991-04-01,36.4101991-07-01,36.5111991-10-01,36.2121992-01-01,36.4131992-04-01,36.6141992-07-01,36.7151992-10-01,36.3161993-01-01,36.0171993-04-01,36.1181993-07-01,36.0191993-10-01,35.8201994-01-01,35.9211994-04-01,35.9221994-07-01,35.9231994-10-01,35.7241995-01-01,35.5251995-04-01,35.5261995-07-01,35.1271995-10-01,34.9281996-01-01,35.0291996-04-01,35.1301996-07-01,35.2311996-10-01,35.0321997-01-01,35.1331997-04-01,34.7341997-07-01,34.5351997-10-01,34.3361998-01-01,33.8371998-04-01,33.8381998-07-01,34.3391998-10-01,33.6401999-01-01,33.7411999-04-01,33.5421999-07-01,33.8431999-10-01,32.9442000-01-01,33.1452000-04-01,33.5462000-07-01,33.6472000-10-01,34.3482001-01-01,35.1492001-04-01,35.0502001-07-01,35.6512001-10-01,35.3522002-01-01,35.4532002-04-01,35.6542002-07-01,36.1552002-10-01,36.1562003-01-01,36.2572003-04-01,35.6582003-07-01,35.3592003-10-01,34.9602004-01-01,34.4612004-04-01,34.4622004-07-01,34.2632004-10-01,33.9642005-01-01,33.9652005-04-01,33.6662005-07-01,33.3672005-10-01,33.3682006-01-01,32.6692006-04-01,32.6702006-07-01,32.4712006-10-01,32.1722007-01-01,31.7732007-04-01,31.3742007-07-01,31.1752007-10-01,31.2762008-01-01,31.4772008-04-01,31.4782008-07-01,31.8792008-10-01,32.6802009-01-01,32.9812009-04-01,32.5822009-07-01,31.9832009-10-01,31.8842010-01-01,31.6852010-04-01,31.6862010-07-01,31.0872010-10-01,30.7882011-01-01,30.5892011-04-01,30.5902011-07-01,31.0912011-10-01,30.8922012-01-01,30.4932012-04-01,30.4942012-07-01,30.3952012-10-01,30.5962013-01-01,30.3972013-04-01,30.3982013-07-01,30.3992013-10-01,30.11002014-01-01,29.81012014-04-01,29.51022014-07-01,29.51032014-10-01,29.21042015-01-01,29.11052015-04-01,29.01062015-07-01,29.21072015-10-01,29.11082016-01-01,29.11092016-04-01,28.91102016-07-01,28.81112016-10-01,29.01122017-01-01,28.91132017-04-01,28.71142017-07-01,28.71152017-10-01,28.61162018-01-01,28.71172018-04-01,28.61182018-07-01,28.51192018-10-01,28.91202019-01-01,28.31212019-04-01,28.41222019-07-01,28.41232019-10-01,28.41242020-01-01,29.81252020-04-01,29.41262020-07-01,29.51272020-10-01,29.21282021-01-01,29.31292021-04-01,29.31302021-07-01,29.61312021-10-01,29.61322022-01-01,30.31332022-04-01,31.41342022-07-01,31.61352022-10-01,31.21362023-01-01,30.91372023-04-01,31.01382023-07-01,31.21392023-10-01,30.71402024-01-01,30.61412024-04-01,30.71422024-07-01,30.31432024-10-01,30.21442025-01-01,30.31452025-04-01,30.11462025-07-01,29.51472025-10-01,29.31482026-01-01,29.51492026-04-01,28.8150