Year	Percent
1989-01-01	11.1247
1990-01-01	37.2463
1991-01-01	18.5563
1992-01-01	14.5132
1993-01-01	27.0465
1994-01-01	38.9487
1995-01-01	37.4357
1996-01-01	40.9727
1997-01-01	76.3931
1998-01-01	84.4816
1999-01-01	137.1800
2000-01-01	66.2782
2001-01-01	44.7918
2002-01-01	26.2019
2003-01-01	36.3012
2004-01-01	32.9735
2005-01-01	36.3901
2006-01-01	50.0211
2007-01-01	50.5963
2008-01-01	43.2845
2009-01-01	60.2343
2010-01-01	46.0320
2011-01-01	43.7509
2012-01-01	39.7431
2013-01-01	37.3996
2014-01-01	48.0455
2015-01-01	40.7645
2016-01-01	31.1827
2017-01-01	34.4580