Year	Percent
1995-01-01	69.6780
1996-01-01	77.0801
1997-01-01	92.0878
1998-01-01	45.6433
1999-01-01	31.7012
2000-01-01	17.4359
2001-01-01	29.6359
2002-01-01	59.4883
2003-01-01	34.7179
2004-01-01	49.8897
2005-01-01	51.0715
2006-01-01	76.7686
2007-01-01	70.2414
2008-01-01	72.3789
2009-01-01	73.2056
2010-01-01	28.4621
2011-01-01	48.8495
2012-01-01	46.8347
2013-01-01	38.2427
2014-01-01	31.0872
2015-01-01	30.1396