Year	Percent
1984-01-01	20.250896057347900
1985-01-01	5.153999006458190
1986-01-01	-13.056572575882900
1987-01-01	-5.974842767295540
1988-01-01	15.477517651430300
1989-01-01	-3.689134604414710
1990-01-01	-0.738282265310936
1991-01-01	3.193874730294970
1992-01-01	-3.113030672149480
1993-01-01	-8.427933486518030
1994-01-01	41.724897236441400
1995-01-01	9.230325997686570
1996-01-01	11.330878905728200
1997-01-01	5.572257111253320
1998-01-01	4.258851102251400
1999-01-01	-8.025059627274540
2000-01-01	3.822600880863040
2001-01-01	12.431286527994100
2002-01-01	5.191818951954460
2003-01-01	-1.752569412486540
2004-01-01	-5.355400288848160
2005-01-01	7.890365674629920
2006-01-01	8.036288979513320
2007-01-01	-8.974739620092690
2008-01-01	10.296975822125400
2009-01-01	9.952422907488620
2010-01-01	-2.077865746418640
2011-01-01	-3.704295704295690
2012-01-01	14.018205423093800
2013-01-01	0.145451047728474
2014-01-01	1.680835875137940
2015-01-01	3.669900434005580