Year	Percent
1980-01-01	0.6479070000000000
1981-01-01	0.7522730000000000
1982-01-01	1.1353100000000000
1983-01-01	1.2038600000000000
1984-01-01	1.4938500000000000
1985-01-01	2.0275300000000000
1986-01-01	2.6850099999999997
1987-01-01	3.0824000000000000
1988-01-01	2.9695900000000000
1989-01-01	2.7184900000000000
1990-01-01	2.6243900000000000
1991-01-01	2.6250700000000000
1992-01-01	2.4334599999999997
1993-01-01	2.3262099999999997
1994-01-01	2.5737200000000002
1995-01-01	3.2408000000000000
1996-01-01	4.1443600000000000
1997-01-01	4.9305500000000000
1998-01-01	6.4536200000000000
1999-01-01	8.2681399999999990
2000-01-01	10.3513000000000000
2001-01-01	14.6696000000000000
2002-01-01	16.8263000000000000
2003-01-01	18.3705000000000000
2004-01-01	18.9203000000000000
2005-01-01	17.9651000000000000
2006-01-01	20.7507000000000000
2007-01-01	23.9464000000000000
2008-01-01	23.6022000000000000
2009-01-01	23.5732000000000000
2010-01-01	21.6019000000000000
2011-01-01	19.3696000000000000
2012-01-01	18.3497000000000000
2013-01-01	17.8576000000000000
2014-01-01	17.5766000000000000
2015-01-01	17.6379000000000000
2016-01-01	17.7493000000000000