Year	Percent
1984-01-01	11.249999999999700
1985-01-01	5.393258426966370
1986-01-01	10.874200426439200
1987-01-01	3.846153846154060
1988-01-01	4.074074074073820
1989-01-01	4.555160142348870
1990-01-01	10.653505786249100
1991-01-01	9.550907413103620
1992-01-01	3.116664326828590
1993-01-01	5.788395904436980
1994-01-01	3.452058330107080
1995-01-01	8.351524979729280
1996-01-01	5.963619617775720
1997-01-01	8.556062581486380
1998-01-01	4.394235099834780
1999-01-01	4.356433745104490
2000-01-01	-2.477456685198350
2001-01-01	3.349964723178950
2002-01-01	1.884534100767660
2003-01-01	1.188170386205280
2004-01-01	-1.890821723061810
2005-01-01	0.418891612855178
2006-01-01	5.369076870655510
2007-01-01	4.410997041934940
2008-01-01	6.774435463711330
2009-01-01	0.991103480568141
2010-01-01	2.078664709064200
2011-01-01	4.473883421650270
2012-01-01	2.540396441671110
2013-01-01	1.506542857014020
2014-01-01	-0.238778144990616
2015-01-01	0.131187999024475
2016-01-01	-1.408430484987650
2017-01-01	0.783900980951342