Year	Percent
1973-01-01	29.032100000000000
1974-01-01	32.293200000000000
1975-01-01	36.388900000000000
1976-01-01	30.570700000000000
1977-01-01	30.468700000000000
1978-01-01	31.524800000000000
1979-01-01	29.765800000000000
1980-01-01	30.943700000000000
1981-01-01	30.317200000000000
1982-01-01	29.531999999999996
1983-01-01	30.096000000000000
1984-01-01	31.926600000000000
1985-01-01	34.965000000000000
1986-01-01	38.803300000000000
1987-01-01	41.413000000000004
1988-01-01	44.753800000000000
1989-01-01	47.689700000000000
1990-01-01	49.175200000000000
1991-01-01	45.278999999999996
1992-01-01	45.042500000000000
1993-01-01	50.143700000000000
1994-01-01	54.835400000000000
1995-01-01	60.147700000000000
1996-01-01	62.691800000000000
1997-01-01	64.720200000000000
1998-01-01	67.009400000000000
1999-01-01	68.578700000000000
2000-01-01	67.196800000000000
2001-01-01	68.134700000000000
2002-01-01	73.217200000000000
2003-01-01	83.442500000000000
2004-01-01	92.505800000000000
2005-01-01	97.201100000000000
2006-01-01	94.850000000000000
2007-01-01	90.731000000000010
2008-01-01	98.565700000000000
2009-01-01	106.682000000000000
2010-01-01	105.677000000000000
2011-01-01	106.165000000000000
2012-01-01	111.416000000000000
2013-01-01	119.420000000000000
2014-01-01	122.166000000000000
2015-01-01	120.893999999999990
2016-01-01	119.495000000000000