Year	Percent
1981-01-01	3.0826500000000000
1982-01-01	3.1748500000000000
1983-01-01	27.1124000000000000
1984-01-01	7.2129199999999996
1985-01-01	6.3804300000000005
1986-01-01	15.4472000000000000
1987-01-01	83.0466000000000000
1988-01-01	33.9948000000000000
1989-01-01	64.6679000000000000
1990-01-01	54.4622000000000000
1991-01-01	53.0169999999999960
1992-01-01	44.4644000000000000
1993-01-01	77.0386000000000000
1994-01-01	56.8106000000000000
1995-01-01	57.1361000000000000
1996-01-01	70.4212000000000000
1997-01-01	77.1096000000000000
1998-01-01	72.8236000000000000
1999-01-01	91.9579000000000000
2000-01-01	98.5286000000000000
2001-01-01	78.3541000000000000
2002-01-01	51.3247000000000000
2003-01-01	57.8245000000000000
2004-01-01	75.5673000000000000
2005-01-01	83.5567000000000000
2006-01-01	119.3020000000000000
2007-01-01	124.8750000000000000
2008-01-01	105.1439999999999900
2009-01-01	116.2779999999999900
2010-01-01	79.8215000000000000
2011-01-01	68.5676000000000000
2012-01-01	52.5947000000000000
2013-01-01	38.0813000000000000
2014-01-01	43.6906000000000000
2015-01-01	52.4549000000000000
2016-01-01	50.1098000000000000
2017-01-01	45.0773000000000000