Year	Percent
1986-01-01	0.2690320000000000
1987-01-01	0.7174430000000000
1988-01-01	1.3310200000000000
1989-01-01	2.2634400000000000
1990-01-01	2.6801200000000000
1991-01-01	1.7986500000000000
1992-01-01	2.0457700000000000
1993-01-01	2.9289099999999997
1994-01-01	2.9725700000000000
1995-01-01	2.0649800000000000
1996-01-01	2.7274000000000000
1997-01-01	4.0733300000000000
1998-01-01	5.4054199999999994
1999-01-01	5.2181300000000000
2000-01-01	6.8287700000000000
2001-01-01	7.5290899999999990
2002-01-01	7.5563400000000000
2003-01-01	6.9376399999999990
2004-01-01	6.0347300000000010
2005-01-01	5.0300300000000000
2006-01-01	4.4766000000000000
2007-01-01	3.4682600000000000
2008-01-01	2.8951300000000000
2009-01-01	3.9651699999999996
2010-01-01	4.3688400000000005
2011-01-01	3.8966500000000000
2012-01-01	4.5910000000000000
2013-01-01	3.9793800000000004
2014-01-01	3.6962699999999997
2015-01-01	3.6298199999999996
2016-01-01	4.7582300000000000