Year	Percent
1996-01-01	19.9881
1997-01-01	27.8626
1998-01-01	31.4367
1999-01-01	42.0199
2000-01-01	48.2451
2001-01-01	40.9563
2002-01-01	40.9563
2003-01-01	40.9563
2004-01-01	26.5009
2005-01-01	59.3804
2006-01-01	61.3129
2007-01-01	37.1536
2008-01-01	95.6714
2009-01-01	59.1119
2010-01-01	51.9236
2011-01-01	45.1746
2012-01-01	52.0209
2013-01-01	52.5159
2014-01-01	50.4641