Year	Percent
1989-01-01	2.6620900000000000
1990-01-01	2.5544200000000000
1991-01-01	2.3918100000000000
1992-01-01	2.2560900000000000
1993-01-01	2.8629500000000000
1994-01-01	3.2702600000000000
1995-01-01	3.6233000000000000
1996-01-01	4.1106500000000000
1997-01-01	4.0139400000000000
1998-01-01	3.4893300000000003
1999-01-01	3.1450600000000000
2000-01-01	3.1153600000000000
2001-01-01	3.2243800000000000
2002-01-01	3.8782900000000002
2003-01-01	5.7740000000000000
2004-01-01	5.2422000000000000
2005-01-01	4.9868300000000000
2006-01-01	5.7012300000000010
2007-01-01	5.0095900000000000
2008-01-01	4.5411300000000000
2009-01-01	4.6446700000000000
2010-01-01	5.9466800000000010
2011-01-01	9.9479000000000000
2012-01-01	10.0458000000000000
2013-01-01	9.3536900000000000
2014-01-01	11.1361000000000000
2015-01-01	13.2971000000000000
2016-01-01	13.1740000000000010