Year	Percent
1980-01-01	7.622380000000001
1981-01-01	7.617489999999999
1982-01-01	8.273290000000000
1983-01-01	12.272700000000000
1984-01-01	11.823600000000000
1985-01-01	20.945999999999998
1986-01-01	26.085300000000000
1987-01-01	27.225800000000000
1988-01-01	27.512800000000000
1989-01-01	36.750500000000000
1990-01-01	42.452000000000000
1991-01-01	41.138100000000000
1992-01-01	45.756600000000000
1993-01-01	67.430800000000000
1994-01-01	73.227700000000000
1995-01-01	70.235000000000000
1996-01-01	67.632000000000000
1997-01-01	60.907700000000000
1998-01-01	68.766600000000000
1999-01-01	74.884200000000000
2000-01-01	94.819500000000000
2001-01-01	120.583000000000000
2002-01-01	127.882000000000000
2003-01-01	151.202000000000000
2004-01-01	211.101000000000000
2005-01-01	252.169000000000000
2006-01-01	330.975000000000000
2007-01-01	305.342000000000000
2008-01-01	305.611000000000000
2009-01-01	382.504000000000000
2010-01-01	310.212999999999970
2011-01-01	232.972999999999980
2012-01-01	172.801000000000000
2013-01-01	134.086000000000000
2014-01-01	114.547000000000010
2015-01-01	95.330100000000000
2016-01-01	66.707800000000000