Year	Percent
1995-01-01	2.8860200000000003
1996-01-01	8.4476700000000000
1997-01-01	12.4152000000000000
1998-01-01	16.2448000000000000
1999-01-01	33.9284000000000000
2000-01-01	46.6529000000000000
2001-01-01	38.5272000000000000
2002-01-01	29.7686000000000000
2003-01-01	31.2631000000000000
2004-01-01	39.9345000000000000
2005-01-01	53.6202000000000000
2006-01-01	63.8205000000000000
2007-01-01	66.4446000000000000
2008-01-01	53.5824000000000000
2009-01-01	43.6038000000000000
2010-01-01	46.0928000000000000
2011-01-01	41.1372000000000000
2012-01-01	36.7932000000000000
2013-01-01	39.1132000000000000
2014-01-01	34.7356000000000000
2015-01-01	34.9907000000000000
2016-01-01	38.7472000000000000
2017-01-01	38.3268000000000000