Year	Percent
1989-01-01	0.17966600000000002
1990-01-01	0.23534800000000000
1991-01-01	0.31816300000000003
1992-01-01	0.37877600000000000
1993-01-01	0.40085200000000000
1994-01-01	0.85660200000000010
1995-01-01	1.22268000000000000
1996-01-01	2.29854000000000000
1997-01-01	5.28233000000000000
1998-01-01	6.46169000000000000
1999-01-01	7.73398999999999950
2000-01-01	10.08170000000000000
2001-01-01	7.32341000000000100
2002-01-01	3.35616000000000000
2003-01-01	3.27819000000000000
2004-01-01	5.27862000000000000
2005-01-01	17.19580000000000000
2006-01-01	42.42450000000000000
2007-01-01	42.00360000000000000
2008-01-01	50.82850000000000000
2009-01-01	46.05410000000000000
2010-01-01	26.11570000000000000
2011-01-01	11.13180000000000000
2012-01-01	5.86019000000000000
2013-01-01	5.10080000000000000
2014-01-01	6.22920000000000000
2015-01-01	6.14921000000000000
2016-01-01	3.52690000000000000
2017-01-01	4.24185000000000000