Year	Percent
1989-01-01	1.7048700000000000
1990-01-01	6.1505000000000000
1991-01-01	7.5449399999999995
1992-01-01	6.9735900000000000
1993-01-01	20.7908000000000000
1994-01-01	26.3768000000000000
1995-01-01	9.1869600000000010
1996-01-01	7.1267500000000000
1997-01-01	16.6040000000000000
1998-01-01	15.5545000000000000
1999-01-01	13.3671000000000000
2000-01-01	10.4739000000000000
2001-01-01	11.4774000000000000
2002-01-01	21.5257000000000000
2003-01-01	33.3566000000000000
2004-01-01	18.4796000000000000
2005-01-01	23.2226000000000000
2006-01-01	14.8466000000000000
2007-01-01	13.0067000000000000
2008-01-01	15.0415000000000000
2009-01-01	18.6261000000000000
2010-01-01	34.2028000000000000
2011-01-01	23.9612000000000000
2012-01-01	9.8011400000000000
2013-01-01	8.5417399999999990
2014-01-01	12.3967000000000000
2015-01-01	8.3360600000000000
2016-01-01	6.4133300000000000
2017-01-01	13.0184000000000000