Year	Percent
1999-01-01	3.3702699999999997
2000-01-01	7.2621500000000000
2001-01-01	5.6388200000000000
2002-01-01	7.8571600000000000
2003-01-01	33.4600000000000000
2004-01-01	69.4035000000000000
2005-01-01	113.3900000000000000
2006-01-01	164.6990000000000000
2007-01-01	206.9609999999999800
2008-01-01	72.7104000000000000
2009-01-01	126.4770000000000000
2010-01-01	170.8650000000000000
2011-01-01	8.9660100000000000
2012-01-01	10.9938000000000000
2013-01-01	12.9823000000000000
2014-01-01	11.8779000000000000
2015-01-01	13.6112000000000000
2016-01-01	14.6698000000000000