Year	Percent
1987-01-01	0.000000000000000
1988-01-01	0.000000000000000
1989-01-01	0.000000000000000
1990-01-01	0.000000000000000
1991-01-01	0.000000000000000
1992-01-01	0.000000000000000
1993-01-01	0.000000000000000
1994-01-01	0.881777000000000
1995-01-01	1.360170000000000
1996-01-01	1.797970000000000
1997-01-01	2.553850000000000
1998-01-01	4.649870000000000
1999-01-01	5.967830000000000
2000-01-01	5.051470000000000
2001-01-01	6.116640000000000
2002-01-01	7.368130000000001
2003-01-01	9.512120000000000
2004-01-01	12.803700000000000
2005-01-01	19.151200000000000
2006-01-01	22.921000000000000
2007-01-01	24.641400000000000
2008-01-01	22.188200000000000
2009-01-01	13.379000000000001
2010-01-01	7.981550000000000
2011-01-01	6.971170000000000
2012-01-01	6.331220000000000
2013-01-01	7.694770000000000
2014-01-01	9.944339999999999
2015-01-01	11.200400000000000
2016-01-01	12.350000000000000
2017-01-01	12.845200000000000