Year	Percent
1975-01-01	5.769260000000000
1976-01-01	7.287450000000000
1977-01-01	6.817350000000000
1978-01-01	12.760500000000000
1979-01-01	5.804380000000000
1980-01-01	5.338330000000000
1981-01-01	10.380400000000000
1982-01-01	9.397219999999999
1983-01-01	12.293400000000000
1984-01-01	19.900500000000000
1985-01-01	23.257500000000000
1986-01-01	43.446400000000000
1987-01-01	64.447800000000000
1988-01-01	31.656999999999996
1989-01-01	37.289200000000000
1990-01-01	35.313100000000000
1991-01-01	37.482900000000000
1992-01-01	28.264100000000000
1993-01-01	42.773300000000000
1994-01-01	51.727800000000000
1995-01-01	36.713300000000000
1996-01-01	48.165900000000000
1997-01-01	76.435200000000000
1998-01-01	109.663000000000000
1999-01-01	251.347000000000000
2000-01-01	361.639000000000000
2001-01-01	309.805000000000000
2002-01-01	94.891000000000000
2003-01-01	96.909600000000000
2004-01-01	99.103800000000000
2005-01-01	103.314000000000000
2006-01-01	130.807000000000020
2007-01-01	141.418999999999980
2008-01-01	118.952000000000010
2009-01-01	110.292999999999990
2010-01-01	108.875000000000000
2011-01-01	99.850300000000000
2012-01-01	89.100600000000000
2013-01-01	85.765600000000000
2014-01-01	94.347500000000000
2015-01-01	121.312999999999990
2016-01-01	79.824300000000000
2017-01-01	92.985800000000000