Year	Percent
1975-01-01	27.99570000000000
1976-01-01	26.37690000000000
1977-01-01	79.17580000000000
1978-01-01	78.64990000000000
1979-01-01	85.21300000000000
1980-01-01	95.98270000000000
1981-01-01	65.15700000000000
1982-01-01	64.02430000000000
1983-01-01	68.33880000000000
1984-01-01	69.52900000000000
1985-01-01	72.33010000000000
1986-01-01	82.86920000000000
1987-01-01	88.20970000000000
1988-01-01	87.46140000000000
1989-01-01	89.75900000000000
1990-01-01	85.66660000000000
1991-01-01	81.24320000000000
1992-01-01	79.56650000000000
1993-01-01	88.81880000000000
1994-01-01	97.88320000000000
1995-01-01	103.55300000000000
1996-01-01	123.85600000000001
1997-01-01	144.21700000000000
1998-01-01	160.94299999999998
1999-01-01	187.38900000000000
2000-01-01	150.55000000000000
2001-01-01	92.69030000000000
2002-01-01	99.10420000000000
2003-01-01	107.45800000000000
2004-01-01	105.71500000000000
2005-01-01	117.87100000000001
2006-01-01	125.50900000000000
2007-01-01	136.71400000000000
2008-01-01	105.96500000000000
2009-01-01	96.50870000000000
2010-01-01	125.21000000000000
2011-01-01	117.77500000000000
2012-01-01	109.23899999999999
2013-01-01	112.37299999999999
2014-01-01	114.32200000000000
2015-01-01	110.16600000000000
2016-01-01	115.69700000000000
2017-01-01	133.94700000000000