Year	Percent
1997-01-01	7.087005912057050
1998-01-01	5.579645058382620
1999-01-01	5.544391803687480
2000-01-01	2.798198924357600
2001-01-01	1.222784758788970
2002-01-01	5.709515859766260
2003-01-01	4.403032217308870
2004-01-01	3.004174986385940
2005-01-01	4.107250707159320
2006-01-01	3.842341256247820
2007-01-01	1.859743793511090
2008-01-01	9.889997886918510
2009-01-01	2.753934850831510
2010-01-01	3.749157275971000
2011-01-01	2.877243584959370
2012-01-01	2.779087682824950
2013-01-01	1.724399336269210
2014-01-01	1.732985100374530
2015-01-01	1.431611458104700
2016-01-01	-0.219106604907305
2017-01-01	0.212570934228834