Year	Percent
1989-01-01	56.2666000000000000
1990-01-01	71.5595000000000000
1991-01-01	66.2252000000000000
1992-01-01	148.6810000000000000
1993-01-01	94.1589999999999900
1994-01-01	62.6364000000000000
1995-01-01	43.5937000000000000
1996-01-01	5.6401900000000005
1997-01-01	34.2697000000000000
1998-01-01	86.8647000000000000
1999-01-01	79.1445000000000000
2000-01-01	46.3065000000000000
2001-01-01	98.9395000000000000
2002-01-01	99.6504000000000000
2003-01-01	125.8370000000000000
2004-01-01	97.3917000000000000
2005-01-01	74.4139000000000000
2006-01-01	70.7535000000000000
2007-01-01	64.4513000000000000
2008-01-01	66.6499000000000000
2009-01-01	91.2243000000000000
2010-01-01	94.4719000000000000
2011-01-01	76.3637000000000000
2012-01-01	72.9612000000000000
2013-01-01	93.3154000000000000
2014-01-01	80.4658000000000000
2015-01-01	71.6347000000000000
2016-01-01	84.1889000000000000
2017-01-01	68.0806000000000000