Year	Percent
1992-01-01	17.483400000000000
1993-01-01	16.188900000000000
1994-01-01	6.997719999999999
1995-01-01	6.951320000000000
1996-01-01	6.020610000000000
1997-01-01	5.972230000000001
1998-01-01	6.654260000000001
1999-01-01	7.486739999999999
2000-01-01	9.001890000000000
2001-01-01	10.530000000000000
2002-01-01	13.364700000000000
2003-01-01	17.741300000000000
2004-01-01	19.866500000000000
2005-01-01	23.581300000000000
2006-01-01	27.658000000000000
2007-01-01	29.969500000000000
2008-01-01	32.887900000000000
2009-01-01	36.919100000000000
2010-01-01	34.303300000000000
2011-01-01	35.168500000000000
2012-01-01	37.594500000000000
2013-01-01	41.991100000000000
2014-01-01	42.337300000000000
2015-01-01	38.991000000000000
2016-01-01	31.266000000000000