Year	Percent
1973-01-01	269.879500000000000
1974-01-01	278.598600000000000
1975-01-01	263.319400000000000
1976-01-01	269.343800000000000
1977-01-01	270.611000000000000
1978-01-01	244.687300000000000
1979-01-01	232.862800000000000
1980-01-01	208.236800000000000
1981-01-01	190.279100000000000
1982-01-01	184.981300000000000
1983-01-01	190.371500000000000
1984-01-01	202.698200000000000
1985-01-01	217.311700000000000
1986-01-01	232.365300000000000
1987-01-01	239.030200000000000
1988-01-01	244.294300000000000
1989-01-01	216.702700000000000
1990-01-01	162.482800000000000
1991-01-01	99.751110000000000
1992-01-01	99.751110000000000
1993-01-01	99.751110000000000
1994-01-01	99.751110000000000
1995-01-01	99.751110000000000
1996-01-01	26.384629999999998
1997-01-01	45.501140000000000
1998-01-01	46.905300000000000
1999-01-01	45.789609999999996
2000-01-01	36.954260000000000
2001-01-01	40.487950000000000
2002-01-01	46.709930000000000
2003-01-01	60.017600000000000
2004-01-01	71.042660000000000
2005-01-01	76.288090000000000
2006-01-01	87.716460000000000
2007-01-01	105.063200000000000
2008-01-01	122.874900000000000
2009-01-01	125.056100000000000
2010-01-01	119.766200000000000
2011-01-01	120.457400000000000
2012-01-01	119.251100000000000
2013-01-01	110.733900000000000
2014-01-01	98.996910000000000