Year	Percent
1989-01-01	19.34510000000000
1990-01-01	17.96450000000000
1991-01-01	17.72240000000000
1992-01-01	51.87050000000000
1993-01-01	23.46790000000000
1994-01-01	27.31580000000000
1995-01-01	23.72880000000000
1996-01-01	22.55200000000000
1997-01-01	25.92430000000000
1998-01-01	25.00760000000000
1999-01-01	25.25820000000000
2000-01-01	32.64290000000000
2001-01-01	43.72920000000000
2002-01-01	53.80210000000000
2003-01-01	69.48260000000000
2004-01-01	107.52600000000001
2005-01-01	123.37200000000001
2006-01-01	104.48400000000000
2007-01-01	92.69910000000000
2008-01-01	73.81370000000000
2009-01-01	51.12750000000000
2010-01-01	28.14490000000000
2011-01-01	30.87900000000000
2012-01-01	45.20500000000000