Year	Percent
1979-01-01	27.92090000000000
1980-01-01	32.84870000000000
1981-01-01	33.54010000000000
1982-01-01	24.60300000000000
1983-01-01	25.47650000000000
1984-01-01	26.51860000000000
1985-01-01	28.38310000000000
1986-01-01	47.38550000000000
1987-01-01	70.91470000000000
1988-01-01	66.21640000000000
1989-01-01	49.99930000000000
1990-01-01	39.20060000000000
1991-01-01	39.21400000000000
1992-01-01	42.50620000000000
1993-01-01	52.62780000000000
1994-01-01	65.22760000000000
1995-01-01	65.97310000000000
1996-01-01	70.56950000000000
1997-01-01	70.87270000000000
1998-01-01	73.55440000000000
1999-01-01	94.20040000000000
2000-01-01	97.82480000000000
2001-01-01	91.82930000000000
2002-01-01	94.68050000000000
2003-01-01	107.91900000000000
2004-01-01	122.02400000000000
2005-01-01	117.70000000000000
2006-01-01	128.31300000000000
2007-01-01	144.16299999999998
2008-01-01	104.29700000000001
2009-01-01	98.14440000000000
2010-01-01	129.76200000000000
2011-01-01	102.06900000000000
2012-01-01	85.90830000000000
2013-01-01	87.56090000000000
2014-01-01	85.95220000000000
2015-01-01	87.71220000000000
2016-01-01	95.63740000000000
2017-01-01	333.88500000000000