Year	Percent
1980-01-01	0.45044600000000000
1981-01-01	0.70766200000000000
1982-01-01	1.44225000000000000
1983-01-01	1.10716000000000010
1984-01-01	0.85613100000000000
1985-01-01	1.14073000000000000
1986-01-01	0.75460100000000010
1987-01-01	0.62569900000000000
1988-01-01	0.45221400000000006
1989-01-01	0.37790799999999997
1990-01-01	0.11319200000000000
1991-01-01	0.46878200000000000
1992-01-01	0.96899400000000000
1993-01-01	12.99780000000000000
1994-01-01	13.80540000000000000
1995-01-01	15.69410000000000000
1996-01-01	18.43370000000000000
1997-01-01	20.84270000000000000
1998-01-01	22.57550000000000000
1999-01-01	26.21350000000000000
2000-01-01	28.20490000000000000
2001-01-01	30.88940000000000000
2002-01-01	82.70680000000000000
2003-01-01	67.49140000000000000
2004-01-01	56.14720000000000000
2005-01-01	28.78199999999999600
2006-01-01	25.92630000000000000
2007-01-01	21.87050000000000000
2008-01-01	14.03360000000000000
2009-01-01	15.02170000000000000
2010-01-01	11.96780000000000000
2011-01-01	9.64542000000000000
2012-01-01	8.73259000000000000
2013-01-01	8.56622000000000000
2014-01-01	8.84313000000000000
2015-01-01	7.81868999999999900
2016-01-01	15.03270000000000000