Year	Percent
1999-01-01	34.2196000000000000
2000-01-01	43.3486000000000000
2001-01-01	29.3869000000000000
2002-01-01	42.7153000000000000
2003-01-01	189.6240000000000200
2004-01-01	1.8627500000000000
2005-01-01	4.0322700000000000
2006-01-01	7.5136899999999995
2007-01-01	11.2054000000000000
2008-01-01	4.2933699999999995
2009-01-01	6.5346600000000000
2010-01-01	7.4750300000000000
2011-01-01	5.8299000000000000
2012-01-01	7.2085300000000005
2013-01-01	7.8957100000000000
2014-01-01	7.7677300000000000
2015-01-01	8.8064700000000000
2016-01-01	8.4488100000000000