Year	Percent
1984-01-01	0.1560000000000000
1985-01-01	4.1720000000000000
1986-01-01	0.8740000000000001
1987-01-01	2.8750000000000000
1988-01-01	3.5280000000000000
1989-01-01	10.6630000000000000
1990-01-01	9.4210000000000000
1991-01-01	22.0340000000000020
1992-01-01	45.2512000000000000
1993-01-01	28.8788000000000000
1994-01-01	17.7759000000000000
1995-01-01	5.3727900000000000
1996-01-01	4.6880200000000000
1997-01-01	6.2032099999999994
1998-01-01	5.8320000000000010
1999-01-01	5.1526100000000000
2000-01-01	5.6772800000000005
2001-01-01	4.4055200000000000
2002-01-01	3.9257400000000002
2003-01-01	10.9324000000000000
2004-01-01	11.7179000000000000
2005-01-01	29.4582000000000000
2006-01-01	38.1629000000000000
2007-01-01	51.2301000000000000
2008-01-01	45.0186000000000000
2009-01-01	55.2631000000000000
2010-01-01	52.9641000000000000
2011-01-01	54.2399000000000000
2012-01-01	55.9182000000000000
2013-01-01	57.5358000000000000
2014-01-01	48.7922000000000000
2015-01-01	49.9386000000000000
2016-01-01	46.6004000000000000