Year	Percent
1993-01-01	3.5904599999999998
1994-01-01	3.5904599999999998
1995-01-01	4.8903800000000000
1996-01-01	5.6361700000000000
1997-01-01	6.1136900000000000
1998-01-01	7.5074700000000000
1999-01-01	12.1023000000000000
2000-01-01	15.8782000000000000
2001-01-01	17.8335000000000000
2002-01-01	16.0150000000000000
2003-01-01	2.8863900000000000
2004-01-01	5.3503600000000000
2005-01-01	7.4305100000000010
2006-01-01	7.2879399999999990
2007-01-01	7.5323699999999990
2008-01-01	6.7097000000000000
2009-01-01	5.2717199999999990
2010-01-01	4.1207000000000000
2011-01-01	3.5606800000000005
2012-01-01	3.8107900000000003