Year	Percent
1989-01-01	110.092999999999990
1990-01-01	47.653400000000000
1991-01-01	97.960500000000000
1992-01-01	110.711000000000000
1993-01-01	228.620999999999980
1994-01-01	135.020000000000000
1995-01-01	55.916600000000000
1996-01-01	63.450100000000000
1997-01-01	87.794300000000000
1998-01-01	72.982200000000000
1999-01-01	53.351000000000006
2000-01-01	42.791700000000000
2001-01-01	35.599200000000000
2002-01-01	28.727600000000000
2003-01-01	39.426300000000000
2004-01-01	39.487800000000000
2005-01-01	39.125900000000000
2006-01-01	45.013300000000000
2007-01-01	59.956800000000000
2008-01-01	54.701100000000000
2009-01-01	75.688200000000000
2010-01-01	59.068300000000000
2011-01-01	57.121900000000000
2012-01-01	73.101200000000000
2013-01-01	69.068700000000000
2014-01-01	71.953000000000000
2015-01-01	76.069700000000000
2016-01-01	91.059700000000000
2017-01-01	72.054300000000000