Year	Percent
1992-01-01	0.178952
1993-01-01	1.339500
1994-01-01	2.382930
1995-01-01	2.978100
1996-01-01	3.877540
1997-01-01	5.964250
1998-01-01	9.252530
1999-01-01	13.918500
2000-01-01	17.135200
2001-01-01	15.693500
2002-01-01	13.776200
2003-01-01	15.341800
2004-01-01	21.520000
2005-01-01	28.408300
2006-01-01	35.855800
2007-01-01	44.063800
2008-01-01	31.734200
2009-01-01	25.239500
2010-01-01	36.226100
2011-01-01	31.739000
2012-01-01	30.452300
2013-01-01	37.000500
2014-01-01	34.377700
2015-01-01	29.293700
2016-01-01	28.510900
2017-01-01	32.914500