Year	Percent
1975-01-01	43.681000000000004
1976-01-01	56.759700000000000
1977-01-01	89.790700000000000
1978-01-01	622.938000000000000
1979-01-01	105.361000000000000
1980-01-01	54.184200000000000
1981-01-01	63.117900000000000
1982-01-01	44.396900000000000
1983-01-01	55.252900000000000
1984-01-01	53.706000000000000
1985-01-01	57.154700000000000
1986-01-01	73.678800000000000
1987-01-01	83.681500000000000
1988-01-01	74.109200000000000
1989-01-01	66.870200000000000
1990-01-01	43.807800000000000
1991-01-01	33.362200000000000
1992-01-01	22.168900000000000
1993-01-01	33.120000000000000
1994-01-01	31.600100000000000
1995-01-01	30.727700000000000
1996-01-01	39.066800000000000
1997-01-01	43.132200000000000
1998-01-01	47.893600000000000
1999-01-01	55.869900000000000
2000-01-01	63.108600000000000
2001-01-01	67.215900000000000
2002-01-01	81.350300000000000
2003-01-01	89.659800000000000
2004-01-01	102.785000000000000
2005-01-01	107.627999999999990
2006-01-01	122.643999999999990
2007-01-01	148.536000000000000
2008-01-01	153.311000000000000
2009-01-01	114.807000000000000
2010-01-01	115.950000000000000
2011-01-01	114.214000000000000
2012-01-01	98.026800000000000
2013-01-01	165.080000000000000
2014-01-01	112.407000000000010
2015-01-01	127.376000000000000
2016-01-01	100.627000000000010
2017-01-01	105.169000000000000