Year	Percent
1990-01-01	0.6282190000000000
1991-01-01	1.2713400000000000
1992-01-01	2.7923700000000000
1993-01-01	3.7703200000000000
1994-01-01	3.0413900000000003
1995-01-01	2.8783700000000000
1996-01-01	4.6731700000000000
1997-01-01	5.9846200000000000
1998-01-01	5.7776800000000000
1999-01-01	6.7490800000000000
2000-01-01	5.3315800000000010
2001-01-01	4.1343900000000000
2002-01-01	4.3885700000000000
2003-01-01	4.8720300000000005
2004-01-01	5.6311100000000000
2005-01-01	5.0445400000000005
2006-01-01	5.1453700000000000
2007-01-01	5.1714000000000000
2008-01-01	4.5276400000000000
2009-01-01	4.7800100000000000
2010-01-01	4.3839999999999995
2011-01-01	8.3030400000000000
2012-01-01	7.6125399999999990
2013-01-01	6.7990300000000000
2014-01-01	6.5543300000000000
2015-01-01	8.7267000000000000
2016-01-01	8.9632600000000000