Year	Percent
1989-01-01	22.367900000000000
1990-01-01	15.752300000000000
1991-01-01	29.825800000000000
1992-01-01	34.824600000000000
1993-01-01	23.223600000000000
1994-01-01	35.042900000000000
1995-01-01	23.016100000000000
1996-01-01	33.160800000000000
1997-01-01	65.783700000000000
1998-01-01	99.901200000000000
1999-01-01	59.571900000000000
2000-01-01	93.151300000000000
2001-01-01	51.553400000000000
2002-01-01	49.178000000000004
2003-01-01	43.577500000000000
2004-01-01	55.262600000000000
2005-01-01	52.126600000000000
2006-01-01	76.848100000000000
2007-01-01	111.642999999999990
2008-01-01	71.322300000000000
2009-01-01	54.832000000000000
2010-01-01	61.030800000000000
2011-01-01	47.826800000000000
2012-01-01	42.923400000000000
2013-01-01	53.171800000000000
2014-01-01	68.666800000000000