Year	Percent
1989-01-01	110.942000000000010
1990-01-01	118.361000000000000
1991-01-01	110.573000000000000
1992-01-01	95.639000000000000
1993-01-01	92.198800000000000
1994-01-01	95.337800000000000
1995-01-01	103.232000000000010
1996-01-01	102.886000000000010
1997-01-01	92.126900000000000
1998-01-01	77.540300000000000
1999-01-01	72.101500000000000
2000-01-01	72.244700000000000
2001-01-01	64.090500000000000
2002-01-01	53.122100000000000
2003-01-01	43.138200000000000
2004-01-01	36.882700000000000
2005-01-01	35.728100000000000
2006-01-01	33.828100000000000
2007-01-01	33.086999999999996
2008-01-01	32.676200000000000
2009-01-01	28.060300000000000
2010-01-01	25.264300000000000
2011-01-01	31.575800000000000
2012-01-01	38.594600000000000
2013-01-01	41.946400000000000
2014-01-01	50.978300000000000
2015-01-01	57.907600000000000
2016-01-01	57.690700000000000