Year	Percent
1992-01-01	100.85700000000001
1993-01-01	171.97299999999998
1994-01-01	198.24400000000003
1995-01-01	65.41720000000000
1996-01-01	89.38940000000000
1997-01-01	78.23540000000000
1998-01-01	54.99070000000000
1999-01-01	45.48860000000000
2000-01-01	69.46520000000000
2001-01-01	34.03700000000000
2002-01-01	11.84670000000000
2003-01-01	23.26610000000000
2004-01-01	32.43360000000000
2005-01-01	30.17460000000000
2006-01-01	43.06500000000000
2007-01-01	47.69280000000000
2008-01-01	30.51250000000000
2009-01-01	51.01540000000000
2010-01-01	39.99050000000000
2011-01-01	43.53050000000000
2012-01-01	39.52740000000000
2013-01-01	37.43520000000000
2014-01-01	30.83700000000000
2015-01-01	37.63560000000000
2016-01-01	33.95790000000000
2017-01-01	39.38950000000000