Year	Percent
1971-01-01	1.0999999990001300
1972-01-01	-0.0989119673600669
1973-01-01	2.4752475247523100
1974-01-01	7.0531400956523100
1975-01-01	2.2563176895508900
1976-01-01	4.4130626655288800
1977-01-01	4.9027895182156300
1978-01-01	8.1012658227846500
1979-01-01	7.0257611241218700
1980-01-01	9.6827133479213100
1981-01-01	19.1271820448877000
1982-01-01	103.5587188612100000
1983-01-01	25.5347593582890000
1984-01-01	15.4009994265581000
1985-01-01	11.5212607368496000
1986-01-01	16.5499681731381000
1987-01-01	26.3790278536324000
1988-01-01	58.7208297320654000
1989-01-01	244.5509329848270000
1990-01-01	567.8788006661910000
1991-01-01	76.7694992087346000
1992-01-01	46.0985621037432000
1993-01-01	36.9641666120718000
1994-01-01	32.9912766093522000
1995-01-01	27.9513885633040000
1996-01-01	19.7949669196707000
1997-01-01	14.9131586149599000
1998-01-01	11.5978554257236000
1999-01-01	7.1540729117986000
2000-01-01	9.9001753884306200
2001-01-01	5.4083354556615100
2002-01-01	1.9052821504805400
2003-01-01	0.6827013757876570
2004-01-01	3.3826468188469400
2005-01-01	2.1837987239025800
2006-01-01	1.2846939436640900
2007-01-01	2.4587431238539700
2008-01-01	4.1649719352477000
2009-01-01	3.7953924248340600
2010-01-01	2.5806937025054600
2011-01-01	4.2394014962593500
2012-01-01	3.5603715170278800
2013-01-01	0.9919826063323500
2014-01-01	0.0538213132400467
2015-01-01	-0.8741258741258490
2016-01-01	-0.6647673314340230
2017-01-01	2.0759355367386200