Year	Percent
1969-01-01	0.34916300000000000
1970-01-01	0.29195000000000000
1971-01-01	0.38627399999999995
1972-01-01	0.87949400000000000
1973-01-01	1.02645000000000000
1974-01-01	1.59410000000000000
1975-01-01	2.06527000000000000
1976-01-01	2.84295000000000000
1977-01-01	3.99375000000000000
1978-01-01	4.05471000000000000
1979-01-01	3.75021999999999970
1980-01-01	3.67588000000000030
1981-01-01	4.43101999999999900
1982-01-01	4.96175000000000000
1983-01-01	5.21101000000000000
1984-01-01	5.72511000000000000
1985-01-01	6.80375000000000000
1986-01-01	6.83868000000000000
1987-01-01	8.05188000000000000
1988-01-01	8.50453999999999900
1989-01-01	9.86984000000000000
1990-01-01	10.85640000000000000
1991-01-01	13.15660000000000000
1992-01-01	14.08530000000000000
1993-01-01	11.42570000000000000
1994-01-01	14.51120000000000000
1995-01-01	14.95360000000000000
1996-01-01	19.24170000000000000
1997-01-01	25.67300000000000200
1998-01-01	33.70730000000000000
1999-01-01	41.41430000000000000
2000-01-01	59.48760000000000000
2001-01-01	67.61720000000000000
2002-01-01	81.69000000000000000
2003-01-01	91.61930000000000000
2004-01-01	95.94710000000000000
2005-01-01	97.40930000000000000
2006-01-01	118.32200000000000000
2007-01-01	121.41500000000000000
2008-01-01	113.54200000000000000
2009-01-01	143.36200000000000000
2010-01-01	154.82900000000000000
2011-01-01	152.78200000000000000
2012-01-01	171.38000000000000000
2013-01-01	164.17600000000000000
2014-01-01	148.64200000000000000
2015-01-01	158.53300000000000000
2016-01-01	148.80500000000000000