Year	Percent
1983-01-01	8.179600000000000
1984-01-01	12.590300000000000
1985-01-01	6.866160000000001
1986-01-01	8.703940000000000
1987-01-01	9.682160000000001
1988-01-01	12.952900000000000
1989-01-01	26.543100000000000
1990-01-01	135.211000000000000
1991-01-01	26.292100000000000
1992-01-01	36.696700000000000
1993-01-01	41.214400000000000
1994-01-01	60.461900000000000
1995-01-01	80.061100000000000
1996-01-01	74.512100000000000
1997-01-01	49.170400000000000
1998-01-01	120.711000000000000
1999-01-01	167.384000000000010
2000-01-01	135.769000000000000
2001-01-01	105.339000000000000
2002-01-01	78.591300000000000
2003-01-01	59.982600000000000
2004-01-01	70.884600000000000
2005-01-01	80.983600000000000
2006-01-01	139.951000000000000
2007-01-01	153.874000000000000
2008-01-01	127.402999999999990
2009-01-01	133.497000000000000
2010-01-01	133.142000000000000
2011-01-01	132.075000000000000
2012-01-01	120.214000000000000
2013-01-01	119.009000000000000
2014-01-01	228.428000000000000
2015-01-01	145.241000000000000
2016-01-01	159.395000000000000